Royal Air Force Typhoon jets have joined French aircraft in a joint strike on an underground arms cache in Syria used by the Islamic State group (IS), the UK Ministry of Defence says.
The facility, identified by intelligence, was believed to be storing arms and explosives, the statement said, and was in mountains just north of Palmyra, an ancient site in central Syria.
"Our aircraft used Paveway IV guided bombs to target a number of access tunnels down to the facility... initial indications are that the target was engaged successfully," the MoD said.
There was no sign of any harm to civilians in the strike and all the aircraft returned safely, the MoD added.
The Typhoon FGR4s were supported by a Voyager refuelling tanker.
