Tikrit, Aug 9, (VOI) - Unknown gunmen blew up a bridge linking Salah al-Din and Kirkuk provinces on Thursday morning, a police source said.

"Unknown gunmen planted and blew up large amounts of explosives under the Pitrokimiwiat concrete bridge near Makhoul mount, 50 km north of Tikrit, bringing down a large part of the bridge," the source told the independent news agency Voices of Iraq (VOI).

The source added, "the 35 km-long bridge linked Salah al-Din province with Kirkuk." It was built over the Lower Zab River, a tributary of the Tigris.

Tikrit, capital city of Salah al-Din, is 175 km north of Baghdad.