Human Rights Watch has said today that torturing, beating, and sodomizing inmates with brooms or pistol barrels were the norm at an illegal prison run by a military unit under the command of the Iraqi prime minister's office.
The prison, at the Muthanna military base near Baghdad, housed mainly Sunni Arab prisoners from the volatile northern city of Mosul.
The rights group called for a thorough investigation over the detention center and urged Iraq to prosecute those responsible.
It was discovered and closed down this month by Iraq's Human Rights Ministry.
Shi'ite Prime Minister Nuri al-Maliki has denied any connection with the facility.
The prison reportedly was not under the jurisdiction of the Justice Ministry, and nor was the Human Rights Ministry informed of its existence.
compiled from Reuters reports