JONESBORO, Ark. — An Army medic from Jonesboro serving in Baghdad was among three American soldiers killed Thursday when a bomb was set off in a vehicle at an outdoor market, his family said.

Paul Faris Brooks, 35, was on his second tour in Iraq, according to his mother, Barbara Brooks.

She said a military chaplain and sergeant arrived at her home around 4 p.m. Thursday to notify the family of the death.

The blast occurred in Baghdad’s southern Dora district, where a bomb exploded near an American foot patrol, U.S. and Iraqi officials said.

The U.S. military initially reported nine U.S. personnel were wounded in the attack. Later, the military said it could not confirm that number because the injured were still being evaluated and treated.

The attack occurred about 10:38 a.m. as the soldiers patrolled near an outdoor market,...