Kilmar Abrego Garcia was subjected to severe mistreatment, including beatings, during this time in an El Salvador prison, his attorneys said in a filing Wednesday.

Kilmar Armando Abrego Garcia was made to kneel overnight, denied bathroom access and confined in an overcrowded cell with bright lights and no windows, his lawyers say.

In a filing from his attorneys, Abrego Garcia alleges being beaten, kicked and subject to psychological abuse after being wrongfully deported to the Salvadoran megaprison.