The move comes after the Obama administration dropped plans to prosecute the suspects in federal court in New York.
Besides Mohammed, the other suspects accused of participating in the 9/11 plot are Walid bin Attash, Ramzi bin al-Shibh, Ali Abdul Aziz Ali and Mustafa Ahmed al-Hawsawi. All five are at Guantanamo.
A Pentagon statement said the charges “allege that the five accused were responsible for the planning and execution” of the 9/11 attacks, resulting in the deaths of nearly 3,000 people.
Source: Larry Shaughnessy for CNN.