Two attacks in Libya's Benghazi Thursday killed an air force chaplain and a former police officer, a security official said, the latest in a wave of violence targeting soldiers and police.

Sheikh Muftah al-Fitouri, who preached at the city's Benina air base, was killed when an explosive device attached underneath his car detonated on Thursday morning, the official said.

In Benghazi's Al-Lithi area, gunmen also shot dead Omar al-Orfi, who served in now slain dictator Moamer Kadhafi's internal security agency, the source added.

A spate of attacks on security personnel and other officials who served under Kadhafi has rocked Benghazi since his overthrow in 2011.