A car bomb exploded Wednesday in a crowd of day laborers waiting for jobs in central Baghdad, killing eight people and wounding 28, police said. Five other people were killed in a gunfight in the northern city of Mosul. The blast occurred about 11:10 a.m. in the Nahda district, police Lt. Bilal Ali said. He said all the dead were civilians but four policemen were among the wounded. In Mosul, 360 kilometers (225 miles) northwest of Baghdad, armed clashes erupted Wednesday between police and assailants in three neighborhoods on the western side of the Tigris River, police Lt. Col. Abdul-Karim Ahmed Khalaf said. At least five gunmen were killed and six were arrested, he was quoted as saying by the Associated Press.