Detectives are searching for the driver of a light coloured hatch-back who they believe may have witnessed a fatal collision in Burnside Heights this morning.

It’s believed a cyclist was riding along Westwood drive this morning when he was struck by a Holden Sedan about 12.20am.

The 20-year-old driver of the vehicle stopped at the scene and is assisting police.

The cause of the collision is yet to be determined.

Anyone who witnessed the incident or who was in the area at the time and has relevant dash cam footage is urged to contact Crime Stoppers on 1800 333 000.