At the notorious CECOT prison, he was forced to frog-march and to kneel from 9 p.m. to 6 a.m., and he was subjected to beatings and threats, his lawyers said Wednesday.

Abrego Garcia said detainees at CECOT were subjected to "bright lights that remained on 24 hours a day, and minimal access to sanitation,” among other abuses.

El Salvador President Nayib Bukele has cast aside allegations that Kilmar Abrego Garcia was beaten and subject to psychological torture in a Salvadoran prison.