Gunmen killed an Iraqi army intelligence officer in the Shi'ite holy city of Karbala on Sunday, police said, as security forces nationwide faced a series of deadly shootings. Maj. Qahtan Adnan Abdul-Razzaq, an intelligence officer with the Iraqi army's al-Hussein Brigade, was gunned down after his car was intercepted in the center of Karbala, 80 kilometers (50 miles) south of Baghdad, health official Salim al-Abadi said. Policeman Mouayad Hussein was killed in a drive-by shooting as he was driving his car in the northern city of Kirkuk, police Brig. Sarhat Qadir said. Gunmen also opened fire on a police foot patrol in eastern Baghdad, killing one policeman, police Lt. Bilal Ali said.