Four men are in hospital following a rollover on the 403 in Aldershot.
OPP Sergeant Dave Woodford says just before 1 o'clock this morning, a car was westbound near Waterdown Road when it rolled into the median ditch.
One of the passengers -- not wearing a seat belt -- was ejected from the vehicle and taken to hospital with life threatening injuries.
His condition has since improved to critical, but stable.
The other three men suffered serious but non-life-threatening injuries.
Woodford says charges are pending against the driver as speed is believed to have been a factor.
The investigation continues but at this point, police haven't said where the men are from.