Saudi Arabia has expanded a buffer zone along its northern border with Iraq, where a US-led military coalition is bombing Islamic State group extremists, official media said on Tuesday.

Mohammed al-Fahimi, a spokesman for northern region border guards, said “the depth of the border has been increased by 20 kilometres (12 miles)”, the Saudi Press Agency reported.

Officers guarding the frontier “called on residents and citizens to stay away from the border areas”, it added, without clarifying the previous depth of the border zone. […]