The United States on Wednesday announced charges against Khalid Sheikh Mohammed, the accused mastermind of the September 11, 2001, terrorist attacks, and four others accused of involvement in the plot.
"If convicted, the five accused could be sentenced to death," the Defense Department said in a statement.
Along with Mohammed, the others are Walid Muhammad Salih Mubarak Bin 'Attash, Ramzi Binalshibh, Ali Abdul Aziz Ali, and Mustafa Ahmed Adam al Hawsawi.
This is the second time the group has been charged by the military. Their initial trial was stopped when then newly-elected President Obama tried to close down Guantanamo. Then an administration effort to move the trial to a federal court in New York was abandoned over protests about security and costs.
The renewed charges allege that the five are "responsible for the planning and execution of the attacks of Sept. 11, 2001, in New York,
Washington D.C., and Shanksville, Pa., resulting in the killing of 2,976 people," the statement said.
Read more about the charges here