Insurgents gunned down a neighborhood police chief and set off a suicide bomb near a patrol guarding a holy shrine, part of a series of attacks Monday targeting Iraqi security forces and leaving at least eight people dead, including four police officers. Gunmen opened fire on a car carrying police Col. Abdul Karim Fahad Abbass as he headed to work in the sprawling southeastern Doura quarter, killing the neighborhood station chief and his driver, Capt. Falah al-Muhimadawi said. Across the Tigris River that bisects Baghdad, a roadside bomb exploded near a police patrol in the Hay Al-Amil area, killing one policeman and wounding five others, Capt. Thalib Thamir said. In Musayyib, 60 kilometers (40 miles) south of Baghdad, a suicide bomber on a motorcycle blew himself up near a police patrol that was protecting a holy shrine. Two policemen and three civilians were killed, police and hospital officials said. At least five other people were injured. In the northern city of Mosul, two Iraqi army soldiers were injured when attackers opened fire on their car, Dr. Bahaa al-Deen al-Bakry said. The two were dressed in civilian clothes at the time of the attack, he said. A university professor, Waad Mohammed Hussein, was also fatally shot as he was driving from home to work in the Zanjely neighborhood, said al-Bakry said.