A military surveillance plane has declared an emergency while flying above Scotland.

An RAF Rivet Joint ZZ664 aircraft, with callsign RRR7211, was flying above the north east when it released the Squawk 7700 signal just after 7pm on Monday.

An emergency squawk is used to identify an aircraft which has a possible issue and enables it to have priority over other air traffic.

It is not yet known what has sparked the emergency signal.

The Herald has contacted the Ministry of Defence for comment.