A 24-year-old cyclist was killed early Tuesday morning on Highway 15, north of Kingston.

Frontenac OPP said 24-year-old Adam Clark of Haliburton, Ont. was killed around 1:20 a.m. after he was hit from behind by a northbound vehicle.

That driver and other stopped to try and help Clark, who was laying in a ditch about 20 metres from his mountain bike.

The accident happened near Stephentown Lane about three kilometres north of Highway 401.

Highway 15 was closed until around 7 a.m. while police investigated.

Anyone who saw the cyclist before the crash can call police at 613-372-1932.