UN Demands Investigation After Rights Worker Dies in Houthi Custody in Yemen

The United Nations has demanded an independent investigation into the death of one of its own staff members in Yemen, after a Yemeni human rights worker held by the Houthi authorities for more than two years died in custody and his family was told of his death only weeks after it happened, according to the United Nations.

Mohammad el Shami, a staff member of the Office of the United Nations High Commissioner for Human Rights in Yemen, had been arbitrarily detained by the Houthi de facto authorities since 6 June 2024, the UN said on Saturday. His family say he died more than a month ago but were informed only recently, and they have received no explanation of the cause or the circumstances of his death.

“Mohammad’s family has not received any explanation of the cause or circumstances of his death – they deserve to know the truth,” Volker Türk, the UN High Commissioner for Human Rights, said in a statement, describing the loss as devastating.

Mr Türk called on the Houthi authorities to disclose all relevant medical and detention records, to preserve evidence and to allow independent scrutiny of any stated cause of death. “There must be accountability for wrongdoing,” he said.

UN Secretary-General António Guterres added his own condemnation in a statement issued late on Saturday, saying he was appalled by the death and that “the circumstances surrounding this appalling tragedy remain unclear.”

“Since his detention in June 2024, the Houthi de facto authorities have provided neither information about his well-being nor proof of life, despite repeated requests from the United Nations. The United Nations is urgently seeking answers from the de facto authorities about the circumstances of his death,” Mr Guterres said, calling for an immediate, impartial, transparent and thorough investigation.

Mr el Shami is the second UN staff member to die in Houthi detention, according to the United Nations. The first was a World Food Programme staff member who died in February 2025. The UN Secretary-General’s office said in June that one UN colleague had already died in detention.

The Houthis did not immediately comment on Mr el Shami’s death, according to Reuters. There has been no public statement from the group about the cause or the circumstances of his death.

Dozens of UN Staff Still Held

Mr el Shami was detained during a wave of Houthi raids in June 2024 in which 13 UN staff were seized. More than 60 people working with the United Nations and other non-governmental organisations were detained in that sweep, and the Houthis accused them of belonging to what they called an “American-Israeli spy network”, a claim the United Nations has consistently rejected.

As of mid-October, the United Nations said 71 of its personnel were in Houthi detention. Al Jazeera, reporting the same figures, put the total number of UN staff and aid workers detained by the Houthis at 72. Yemen’s internationally recognised government said more than 70 UN employees and dozens of humanitarian workers remained in Houthi custody, according to Reuters.

Mr Türk said he was gravely concerned about the UN personnel still being held, including seven colleagues from his own office, as well as detained humanitarian and civil society workers. He again appealed for their immediate and unconditional release.

“Under no circumstances can UN personnel be detained, much less charged with crimes, for undertaking their vital work on behalf of the Yemeni people,” Mr Türk said in March, in a statement the UN repeated as it announced Mr el Shami’s death.

The Houthis have previously paraded some of the detainees on television, presenting them as collaborators with Western intelligence agencies and Israel. The group has said those being held were part of a spy network working for the United States and Israel. No evidence supporting those accusations has been made public, and the United Nations has described the detentions as arbitrary.

The danger to UN staff in Houthi-held Yemen has already forced the organisation to scale back its work. The United Nations paused operations in parts of Houthi-held territory in February 2025 over concerns for the safety of its employees, after the first death in custody. On 6 October this year, the UN announced that a World Food Programme employee had been released after being arbitrarily detained by the group.

Yemen’s prime minister, Shaya al-Zindani, condemned Mr el Shami’s death and said he held the Houthis fully responsible, calling for those responsible to be held accountable, according to Reuters. A Yemeni government minister separately told the Saudi broadcaster Al Arabiya that Mr el Shami had been tortured to death in a Houthi prison. That allegation has not been independently verified, and neither the United Nations nor Mr Türk’s statement specified a cause of death.

A War That Has Slid Back Into Full-Scale Fighting

Yemen has been at war since 2014, when the Houthis seized the capital, Sanaa, and much of the north of the country. A Saudi-led coalition intervened in 2015 in support of the internationally recognised government, which is now based in the southern port city of Aden. The conflict has divided the country, with the Houthis holding Sanaa and much of the north and north-west, while government-aligned forces control much of the south and east.

A UN-mediated truce in 2022 brought a period of relative calm, but that calm has broken down. Briefing the UN Security Council on 9 October, the UN Special Envoy for Yemen, Hans Grundberg, said the country had “slid back into full-scale war, with hostilities spreading across multiple frontlines”.

The UN aid coordination office, OCHA, says more than 22 million people need humanitarian aid in Yemen this year, in what the United Nations describes as one of the world’s most serious humanitarian and human rights crises.

“By detaining our colleagues, the de facto authorities are gravely undermining our ability to support the people of Yemen during a most serious humanitarian and human rights crisis,” Mr Türk said. “I urge them to change course.”

Mr Grundberg told the Security Council that many of the detainees had serious health problems, which made their release all the more urgent. The United Nations has repeatedly said it has received no information about the health or the whereabouts of the detained staff, despite repeated requests.

The Houthis, who are backed by Iran, have also become a central actor in the wider regional conflict. Since the war between the United States and Israel and Iran began in February, the group has intensified its attacks, firing drones and missiles towards Saudi Arabia and at shipping in the Red Sea. Saudi-led air defences have intercepted drones over Riyadh, the Eastern Province, the southern region and near the holy city of Mecca, according to reports in recent days, while the Houthis have denied some of the attacks attributed to them.

The group’s detention of UN staff sits inside that wider confrontation. The Houthis have framed the detained aid workers as agents of their enemies, while the United Nations insists they are humanitarian workers whose only offence was doing their jobs in territory the group controls.

Analysis: Why It Matters

A death the world was not allowed to see

The most damning fact in this case is not only that Mohammad el Shami died in custody. It is that his family learned of his death more than a month after it happened, and that the United Nations, which employed him, was given neither information about his well-being nor proof of life at any point during more than two years of detention. That is not an administrative failure. It is a system of detention designed to be opaque, in which the people held inside it are cut off from the outside world and their families are left to guess whether they are alive.

When a detaining authority refuses for two years to confirm that a prisoner is alive, and then takes more than a month to report that he is dead, the burden of proof shifts. The Houthis do not need to be presumed guilty of any particular act to be held responsible for the conditions they created: a detention without charge, without trial, without access and without explanation. The United Nations is right to demand the medical and detention records, because in a case like this the records are the only thing that can distinguish between a death from illness, a death from neglect and a death from abuse. Without them, every explanation the authorities eventually offer will be unverifiable, and every denial will be untestable.

The second death changes the argument

Mr el Shami is the second UN staff member to die in Houthi custody, after the World Food Programme worker who died in February 2025. A single death in custody can be presented, however implausibly, as an accident or an isolated tragedy. Two deaths, in the same system of detention, within twenty months of each other, describe a pattern. That is why the language from the top of the United Nations has hardened: the Secretary-General is “appalled”, the High Commissioner for Human Rights speaks of “accountability for wrongdoing”, and both men are demanding an investigation that is not only prompt and thorough but independent — a word that carries a specific meaning here, because an investigation run by the same authorities who held Mr el Shami cannot be trusted to examine itself.

The pattern also matters for the 71 UN personnel still in detention. If two of their colleagues have died in the same system, the remaining detainees cannot be assumed to be safe. Mr Grundberg’s warning to the Security Council that many detainees have serious health problems adds urgency to a situation that has already dragged on for more than two years. Every month of delay is a month in which another family could receive the same news Mr el Shami’s family received — late, unexplained and irreversible.

Aid workers as bargaining chips

The Houthis’ accusation — that the detained UN and aid workers belong to an “American-Israeli spy network” — has never been supported by public evidence, and it has never been tested in any credible legal process, because there has been no legal process. The detainees have not been charged in a court that anyone outside Houthi-controlled territory would recognise, and the group has instead paraded some of them on television as confessed collaborators. That is not justice. It is theatre, and its purpose is leverage.

Detaining aid workers gives an armed group something to trade: releases can be offered as concessions, detainees can be held as insurance against attack, and the mere fact of holding them signals to the outside world that the group can reach into the institutions that are supposed to be protected. The United Nations paused operations in parts of Houthi-held Yemen in February 2025 precisely because this logic makes humanitarian work impossible. An aid worker who can be seized at any moment, accused of espionage and held for years without charge, cannot do the work of feeding, vaccinating and sheltering 22 million people in need.

The release of a World Food Programme employee on 6 October shows that releases are possible when pressure is applied. But one release against 71 people still held is not progress. It is a reminder that the system is still operating, and that every detainee remains a hostage to a political calculation that has nothing to do with them.

Yemen’s forgotten war is getting worse, not better

It is easy, amid the far larger war between the United States, Israel and Iran, to treat Yemen as a sideshow. That would be a mistake, and Mr Grundberg’s warning to the Security Council should be read carefully: Yemen has “slid back into full-scale war”. The truce of 2022 is dead, hostilities are spreading across multiple frontlines, and the Houthis are firing drones and missiles at Saudi Arabia and at shipping in the Red Sea with a frequency that would have been unthinkable during the ceasefire.

The detention of UN staff and the return to full-scale fighting are not separate stories. They are two expressions of the same collapse: a state in which armed actors no longer feel constrained by the rules that once limited them, whether those rules concern the protection of aid workers or the conduct of war. The United Nations’ humanitarian operation in Yemen, already one of the largest in the world, is being squeezed from both sides — by fighting that makes delivery dangerous and by a detaining authority that treats the deliverers as enemies.

There is also a regional dimension that cannot be ignored. The Houthis are backed by Iran, and their campaign against Saudi Arabia and Red Sea shipping is part of the same confrontation that has brought the United States and Israel to the brink of renewed strikes on Iran after Tuesday’s midterm elections. Yemen is where that confrontation meets the daily lives of ordinary people — and where it meets the people trying to help them.

What the UN can actually do

The uncomfortable truth is that the United Nations has limited leverage over the Houthis. It cannot compel them to open their detention centres, to hand over medical records or to release 71 people. Its tools are diplomatic pressure, public condemnation and the slow machinery of international law. The Security Council has demanded the release of detained UN staff before, and the detentions have continued. The Secretary-General has written letters, the High Commissioner has issued statements, and the staff have stayed in their cells.

That does not make the demands pointless. Public condemnation from the Secretary-General and the High Commissioner for Human Rights creates a record, and records matter when the time comes for accountability — whether through sanctions, through international courts or through the political settlements that eventually end wars. The demand for medical and detention records is also practical: it gives the Houthis a specific, achievable step that would cost them nothing if they have nothing to hide, and whose refusal would itself be evidence.

But the limits of UN leverage should be honestly stated. The people who can free the remaining detainees are the Houthis themselves, and the people who can pressure the Houthis are their backers and their neighbours — above all Iran, whose influence over the group is real, and the Gulf states, whose mediation channels with Tehran are currently active in the parallel effort to avert a renewed US-Iran war. If those channels can carry messages about the Strait of Hormuz, they can carry messages about 71 detained aid workers too. Whether they will is a question of political will, not of access.

What to Watch Next

1. Any Houthi response: The group has not yet commented on Mr el Shami’s death. Whether it issues a statement, offers a cause of death or releases any records will be the first test of whether the UN’s demands are being heard at all.
2. The medical and detention records: Mr Türk has asked for the records to be disclosed, preserved and independently scrutinised. Watch for whether any records are produced, and whether any independent body is given access to examine them.
3. The fate of the 71 still held: Seven of Mr Türk’s own OHCHR colleagues remain in detention, along with other UN, humanitarian and civil society workers. Any further releases — or any further deaths — will show whether the pressure is working.
4. The torture allegation: A Yemeni government minister has alleged, through Al Arabiya, that Mr el Shami was tortured to death. That claim has not been independently verified. Watch for corroboration, for the UN’s response and for any evidence that either supports or contradicts it.
5. Yemen’s return to full-scale war: Mr Grundberg’s warning to the Security Council that hostilities are spreading across multiple frontlines will be tested in the coming weeks. A further escalation would make the humanitarian operation — and the safety of the detained staff — harder still.

Sources

• UN News – “‘They deserve to know the truth’: UN rights chief demands probe into staffer’s death in Houthi custody”
• Reuters – “UN says Yemeni staff member dies in Houthi custody, demands investigation”
• United Nations – Statement attributable to the Spokesperson for the Secretary-General on the death of an OHCHR staff member in detention by the Houthi de facto authorities in Yemen