Dec. 1 (UPI) -- Chiefs of Britain's elite SAS tried to cover up possible war crimes committed in Afghanistan, according to testimony published Monday by the independent public inquiry into the actions of British Special Forces in the country.

In his closed-door testimony, an officer, said to be very high up in the SAS, detailed how he had provided the then-director of special forces with "explosive" evidence in 2011 indicative of "criminal behavior."

When his successor took over a year later in 2012, the officer testified that he did nothing about it despite the fact that he "clearly knew there was a problem in Afghanistan."

The Independent Inquiry relating to Afghanistan was set up in 2022 to look into possible crimes committed during Deliberate Detention Operations, otherwise known as "kill or capture," in Afghanistan between 2010 and 2013, including the murder of detainees and unarmed civilians, including children.

In summer 2023, the Ministry of Defense clarified that the inquiry related to U.K. Special Forces specifically.