Immigration and Customs Enforcement (ICE) kept 92 Somali immigrants chained on an airplane for 46 hours in "slave ship" conditions during a botched attempt to deport them back to Somalia earlier this month, detainees and advocates say.

The plane carrying the Somalis—chartered by the ICE Air Operations division—made a pit stop in Dakar, Senegal, 10 hours after taking off from Louisiana on December 7. But the plane never made it to Mogadishu. Instead, after parking the plane on the tarmac for nearly a day, ICE turned it around and made the 4,600-mile flight back to the United States on December 9.