JOINT BASE LEWIS-McCHORD, Wash. (AP) — A U.S. Army DNA expert testified Thursday that the soldier suspected of killing 16 Afghan civilians during a nighttime rampage last March had the blood of at least four people on his clothes and guns when he surrendered.

The blood of two males and two females was discovered on Staff Sgt. Robert Bales’ pants, shirt, gloves, rifle and other items, said Christine Trapolsi, an examiner at the Army’s Criminal Investigation Laboratory.