Corpses covered in dust and debris were scattered in the wreckage of a detention centre for African migrants in Yemen, after what Houthi-controlled television described as a U.S. airstrike that killed 68 people.

Yemen’s Houthi rebels on Monday alleged a US airstrike hit a prison holding African migrants, killing at least 68 people and wounding 47 others. The US military had no immediate comment.

The strike in Yemen's Saada governorate, a Houthi stronghold, is the latest incident in the country's decade-long war against African migrants who risk crossing Yemen for a chance to work in Saudi Arabia.