A suicide bomber killed five people and wounded 120 others, including 65 schoolchildren, in northern Iraq Monday, while three people were killed in two other attacks in central Iraq, police said.

In the first incident, the blast occurred when a suicide bomber blew up his explosive-laden car near the police headquarters in the town of al-Debis, some 45 km from Kirkuk city, killing five people and wounding 120 others, reported Xinhua citing source.

Three of the killed were policemen and some 65 of the wounded were schoolchildren, the source said. The blast damaged the police headquarters as well as the school and a government building.

In a separate incident, two civilians were killed by gunmen using silenced weapons in Sabie al-Bour area in north of Baghdad, an interior ministry source said.

In Diyala province, gunmen on a motorcycle shot dead a blacksmith near Baquba city, some 65 km from Baghdad, a source said.