A man in his 70s was in a critical condition in hospital last night after the bicycle he was riding was struck by a car in Coleraine.
The incident happened on the Millburn Road shortly before 1pm yesterday.
The man was hit by a black Vauxhall Agila and sustained injuries to the head and upper body.
Police, paramedics and the air ambulance attended the scene.
The PSNI said enquiries into the collision were ongoing.
"Officers would ask anyone who witnessed the collision or who may have captured footage on dash-cam to contact them at Coleraine on 101 quoting reference number 652 14/01/21," police added.
The Millburn Road was closed for some time after the incident before being reopened yesterday evening.