(CNN) — A military jury was finalized on Tuesday in the murder trial of Army psychiatrist Maj. Nidal Hasan, who is accused of killing 13 people in a 2009 shooting rampage at Fort Hood, Texas.
Three jurors were added to the court-martial panel to complete the selection phase, according to a military statement.
The court-martial panel is comprised of 13 senior Army officers, including nine colonels, three lieutenant colonels and one major.
Two members of the panel are women and the highest ranking officer is a female colonel and therefore leads the group, the statement said.
Hasan, who is acting as his own attorney, faces a possible death sentence, if convicted.
Col. Tara Osborn, the military judge, has entered a not-guilty plea on his behalf.
Hasan has been charged with multiple counts of murder and attempted murder in connection with the November 5, 2009, shooting on the base near Killeen, Texas.
Osborn has barred Hasan, a devout Muslim who is acting as his own counsel, from using a defense that he acted to protect the Taliban in Afghanistan when he opened fire at a post deployment center.
Osborn said there was no evidence to support a "defense of others" claim.
Opening statements in the long-delayed case are set to begin August 6.