Fort Hood

Also: Secretary of the Army says background checks on the soldier who killed at least three people and wounded 16 before taking his own life showed "no involvement with extremist organizations."

The suspected shooter at the Texas Army post is Ivan Lopez, a Pentagon official tells NPR. Authorities say he was being evaluated for PTSD and treated for depression.

During the court martial, Maj. Nidal Hasan acted as his own attorney and seemed intent on seeking the death penalty. The military jurors begin the sentencing phase on Monday.