The International Organization for Migration (IOM) called on Tuesday for the release of more than 3,000 migrants, mainly Ethiopians, who it said remain held in inhumane conditions in two detention centres in southern Yemen.
Some 3,000 migrants continue to be held in two temporary detention sites in Yemen's Aden and Abyan governorates," IOM spokesman Joel Millman told a news briefing in Geneva.
"IOM remains extremely concerned for the people being held in inhumane conditions in Aden and Abyan," Millman said.
They include about 2,500 held in a football stadium in Aden, where aid workers are fighting disease outbreaks, he said.
IOM said last week that on April 30, guards fired on migrants detained at Aden sports stadium, two of whom suffered gunshot wounds, leaving a teenage boy likely paralyzed for life. It had no further information on the incident on Tuesday.
Thousands of migrants are stranded in other locations throughout Yemen," Millman said.
The IOM was talking to the authorities to try to get them released, he added.
The UN migration agency had received reports that in recent days more than 1,400 people detained at a military camp in Lahj were released, he said. At least 14 migrants have died of an outbreak of acute watery diarrhoea in Lahj, where IOM is treating some 70 former inmates, he said.
IOM is planning to evacuate 237 Ethiopians to Addis Ababa under its voluntary repatriation programme, he said.
The number of African migrants who arrived in Yemen illegally during the first three months of 2019 was more than 37,000, according to the International Organization for Migration (IOM).
Yemen is a destination for refugees from the Horn of Africa, especially Somalia and Ethiopia, many of whom are moving on their difficult journey to the Gulf states, especially Saudi Arabia.
Yemen is hosting around 280.000 African refugees and migrants, according to UN data.
An official in the internationally recognised government of Yemen has warned, last week, of continued illegal migration from African horn countries to Yemen, citing impact of migration on national security.