David Cameron's former communications chief Andy Coulson has arrived at a Scottish police station to be questioned on suspicion of committing perjury during the trial of former MSP Tommy Sheridan.
The 44-year-old was detained in London this morning by officers from Strathclyde Police.
He arrived at Govan police station in Glasgow just before 3.30pm.
Police have 12 hours to question Mr Coulson before applying for a further 12-hour period if it is deemed necessary.
Former News of the World editor Andy Coulson is being detained at a Scottish police station by officers investigating alleged perjury.
Profile of Andy Coulson, David Cameron's former Director of Communications and ex-Editor of News of the World.