ISLAMABAD (CNN) -- A tribal leader accused of harboring Al Qaeda militants in Pakistan's western border region was killed Thursday night in a targeted missile strike, according to Pakistan intelligence sources. The Associated Press quoted an army spokesman Friday as identifying the tribal leader as Nek Mohammed, a former Taliban fighter. He was killed late Thursday at the home of another tribal chief, the spokesman said. "We were tracking him down and he was killed last night by our hand," Maj. Gen. Shaukat Sultan told The Associated Press.