Armed groups Tuesday set 20 oil trucks ablaze on the Fallujah-Samarra road, DPA quoted independent Voices of Iraq news (VOI) agency as citing a police source. The gunmen also seized a number of drivers, while others managed to escape and reported the incident, the source added. Most of the truck drivers, according to the source, are from Anbar and Salahaddin provinces who transport crude oil from Bayji refinery, 180 kilometres south of Baghdad. The Fallujah-Samarra road is 100 kilometres south of Baghdad, linking it with Anbar and Salahaddin provinces.