Gunmen attacked an army camp in eastern Pakistan on Monday, killing at least seven security personnel and wounding five.
The attack happened at a site on the Chenab river in the Gujrat district of central Punjab province, near the city of Wazirabad. The gunfire came from a bridge.
The Pakistani Taliban has claimed responsibility. Such attacks are rare in Punjab.
The BBC reports the camp had been set up to search for the body of an army pilot whose helicopter crashed in May.