One man is in life-threatening condition after a two-vehicle crash on Vanier Parkway.
The incident happened on the parkway at Queen Mary Street, at 11:03 a.m., Tuesday.
Ottawa paramedics say the lone occupant of one of the vehicles was found in critical condition from a possible medical emergency, which preceded the collision.
Paramedics, with the assistance of firefighters, initiated aggressive resuscitation, which they continued as the man was taken to a local hospital.
No other injuries were reported.