A boat carrying 260 migrants sank off Yemen's coast on Monday, killing at least 49 people and leaving 140 others missing, the United Nations' international migration agency said Tuesday.

Seventy-one people had survived the sinking, according to a news release from the International Organisation for Migration. Most required minor care while eight were transferred to a hospital for medical treatment, the group said. Six children were among the survivors rescued, while another six children and 31 women were among the dead. Search and rescue missions were ongoing, but the IOM noted that a shortage of patrol boats, made worse by current conflict, posed challenges to their operations.

The boat was carrying 115 Somali nationals and 145 Ethiopians, according to the IOM.

Each year many tens of thousands of migrants from the Horn of Africa set off across the Red Sea in a bid to reach the oil-rich Gulf, escaping conflict, natural disasters or poor economic prospects.

In April, two boats sank off the coast of Djibouti just two weeks apart, leaving dozens dead.

The IOM said at the time it had recorded a total of 1,350 deaths on the migration route since 2014, not including this year. In 2023 alone, it said it documented at least 698 deaths on the route, including 105 lost at sea.

The IOM said on Tuesday it was "providing immediate aid to survivors."

Those migrants who successfully reach Yemen often encounter further threats to their safety. The Arabian Peninsula's poorest country has been mired in civil war for a decade.

Many are trying to reach Saudi Arabia and other Gulf Arab countries where they can work as laborers or domestic workers.

In August, Human Rights Watch accused Saudi border guards of killing "at least hundreds" of Ethiopians trying to cross into the Gulf kingdom from Yemen between March 2022 and June 2023, using explosive weapons in some cases. Riyadh dismissed the group's findings as "unfounded and not based on reliable sources."

The IOM said last month that, despite the many dangers of the migration route, the number of migrants arriving in Yemen "tripled from 2021 to 2023, soaring from approximately 27,000 to over 90,000."

In:
• Immigration
• Africa
• Boat Accident
• Yemen
• Migrants

Tucker Reals

Tucker Reals is CBSNews.com's foreign editor, based in the CBS News London bureau. He has worked for CBS News since 2006, prior to which he worked for The Associated Press in Washington D.C. and London.