A drive-by shooting and car bomb killed three people in separate attacks early Tuesday in Baghdad, police said. Unknown gunmen showered a car with bullets near the Buratha mosque in northern Baghdad, killing two men and wounding a third, police said. The men were all in the same car, police said. One of those killed was Moussa Jaafar, a top geology surveyor working for the government, they said. The attack took place around 7:45 a.m., in an area that is usually packed with Iraqi security troops and police, because of the nearby mosque. About 15 minutes earlier, a parked car bomb exploded on a main road in southwest Baghdad's Baiyaa neighborhood, killing one civilian and wounding six, police said. Most of the wounded were young boys on their way to school, police said.