A POLICE officer involved in a crash on the M90 'remains unconscious' in hospital.

Chief Superintendent Stewart Carle, head of Police Scotland's Road Policing unit, posted on Twitter that he had visited one of the officers that was injured in the smash on Sunday night.

The incident happened shortly after 9.30pm and led to the north-bound stretch between junctions four and five being closed.

Mr Carle provided an update on his colleague yesterday evening (Thursday).

He tweeted: "Today with CI Patterson, I visited one of @polscotrpu officers injured in Sunday evening’s RTC on M90.

"Whilst he remains unconscious, the intensive treatment & care from #NHSScotland is humbling as is the bravely optimistic love & unstinting attention from his fiancée & family."

Mr Carle had previously stated that the officers crashed while responding to a report of a drunk driver and had been injured “seriously”.

The driver was taken to the Western General Hospital in Edinburgh with neurological injuries, while the passenger was taken to Ninewells Hospital with back injuries.

Chief Inspector Mark Patterson, from Road Policing East, added: “The officers in the patrol car were responding to the report of a drunk driver on the motorway when the collision happened.

“Our thoughts are with both officers and their families at this time. I would appeal to anyone who may have witnessed this collision to call Police Scotland on the 101 number, quoting the incident reference number 3798 6/10.”