A recently released U.S. Department of Homeland Security document sheds light on the March death of Mohammed Nazeer Paktiawal, an Afghan asylum seeker who died while in federal custody in Dallas, Texas.

The case has drawn attention from the Senate Homeland Security Committee Permanent Investigations Subcommittee and raised questions about the circumstances of his detention and treatment. The investigation into the death is ongoing, with authorities in Dallas County cooperating with federal agencies to determine the facts and accountability.