FORT STEWART, Ga. (AP) — The Army says three soldiers based at Fort Stewart in southeast Georgia died in a weekend suicide bomb attack in Afghanistan that also killed an American diplomat.

The military identified the three slain soldiers Tuesday as 24-year-old Staff Sgt. Christopher M. Ward of Oak Ridge, Tenn.; 25-year-old Spc. Wilbel A. Robles-Santa of Juncos, Pureto Rico; and 24-year-old Spc. Delfin M. Santos Jr. of San Jose, Calif. They were deployed with the 5th Squadron, 7th Cavalry Regiment of the Army's 3rd Infantry Division.

The soldiers were among five Americans killed Saturday in a suicide car bombing while delivering textbooks to children in Zabul, Afghanistan. The Taliban claimed responsibility for the attack.

Also killed in the attack was Anne Smedinghoff, a 25-year-old U.S. diplomat from suburban Chicago, and a Defense Department civilian.