BAGHDAD, Iraq (AP) _ A man with explosives hidden under his clothes set them off while standing in a line of people waiting outside a police and army recruitment center in northern Iraq on Wednesday, killing 30 people and wounding 35, police said.

Police first thought the powerful blast in Hawija, a small town 150 miles north of Baghdad, was caused by a car bomb, but Police Maj. Sarhad Qadir later said officials found it was an attacker standing in a line of about 150 recruits.