A 16-year-old girl is in a serious condition in hospital following a one car crash in Ballynahinch on Sunday morning.
The crash on the Magheraknock Road was reported to police at around 8.15am.
The male driver of the vehicle involved, a grey MG ZR, sustained non-life threatening injuries.
The road is closed between its junctions with Langley Road and Laurel Road.
Police are keen to speak with anyone who witnessed the collision or who saw the vehicle travelling on the Magheraknock Road or surrounding roads prior to the time of the collision.