A suspect is in custody after a hit-and-run in Centretown left a pedestrian unconscious with serious head injuries on Tuesday night, according to Ottawa police.

The driver of a car ran from the scene of the crash at the intersection of Kent and Catherine streets, which is near the bus station, after hitting a 42-year-old man just before 10:30 p.m., police said

Pedestrian struck at Kent and Catherine streets

This is the windshield of a car that struck a man near the Ottawa bus station on the night of Aug. 12, 2014. (CBC)

Police have not said whether alcohol or drugs are involved, or whether the vehicle was stolen. There is also no information on potential charges.

Paramedics said the pedestrian was taken to hospital with severe head, neck and leg injuries and he was in critical condition when he arrived in the emergency room.

Man struck by OC Transpo bus

Two hours earlier, Ottawa paramedics said a 56-year-old man suffered serious head injuries when he was struck by an OC Transpo bus.

It happened at the intersection of Rideau and Waller streets.

Paramedics said the man was taken to hospital in serious but stable condition.

This is the same intersection where a woman was struck and killed while walking in February.