The U.S. Marine Corps has ordered two Marines not to speak to the media about their accusations of prisoner abuse at the Guantanamo Bay detention center.

Both Marines are part of a military legal team defending a detainee at Guantanamo Bay.

Marine officials say the gag order was issued to ensure the legal team's actions conform to professional standards.

Last week Lieutenant Colonel Colby Vokey and Sergeant Heather Cerveny released a report which included a sworn statement from Cerveny alleging she heard guards describing the physical and mental abuse of prisoners.

The Defense Department is investigating the accusations.

The United States has been widely criticized for creating and maintaining the Guantanamo Bay prison, where suspects from the wars in Afghanistan and Iraq are held for questioning.