A British military officer says Royal Air Force warplanes flying out of a UK air base on Cyprus have destroyed four Islamic State group targets in Iraq over the last two days.

RAF Akrotiri station commander Chaz Kennett said Wednesday that two Tornado GR4 aircraft used bombs and precision missiles to destroy a "heavy weapon position" and an armed pick-up truck. They were supporting Kurdish troops under attack Tuesday from the extremist group in northwest Iraq.

In the second strike early Wednesday, a pair of Tornado planes fired four missiles to destroy two Islamic State group vehicles, including an armed pick-up truck.

British warplanes have been conducting combat missions over Iraq since Saturday, hours after Britain joined the U.S.-led coalition of nations that are launching airstrikes against the extremists.