SAN JUAN, Puerto Rico (AP) — An autopsy has found that a Guantanamo Bay prisoner who died in September took an overdose of medication in an apparent suicide, a U.S. official said Thursday.

Adnan Latif, who was found unconscious in his cell in a disciplinary wing of the prison at the U.S. base in Cuba, took an overdose of psychiatric medication, according to a senior Defense Department official.