The British military launched airstrikes with the United States targeting Yemen’s Houthi rebels. The strikes Tuesday night marked their first involvement with America’s new intense campaign targeting the Iranian-backed group.

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.

The death toll mounts from weekslong U.S. air campaign to deter rebel group’s strikes on ships in Red Sea.