Baghdad, Sep 8 (DPA) Five policemen, including a high-ranking officer, were killed Tuesday when an explosive device went off targeting their patrol in the northern city of Kirkuk, the police said.

Police sources named the officer as Ziyad al-Bayati, from Amerly district in Kirkuk, which lies 250 km north of Baghdad.

A second bomb went off also went off in the city, targeting another patrol, but without injuries.

Separately, one person was killed and five others were injured Tuesday when an explosive device went off in eastern Baghdad.

The bomb exploded near a vehicle carrying employees from the ministry of health, killing one and injuring three others, police told the Voices of Iraq news agency.

Two civilians close to the scene of the blast were injured as well.

At least five civilians were killed and 22 others were injured Monday in a suicide blast in central Baquba, which lies around 60 km northeast of Baghdad.

That explosion happened at the Abdulkarim al-Medani mosque, the largest Shiite mosque in Diyala province.