A driver is in hospital after a two-vehicle crash on Highway 401 in Oshawa.
Emergency crews were called to the area near Harmony Road around 11:30 p.m. Wednesday.
The driver of one of the vehicles was rushed to a trauma centre with critical injuries. The other driver was not injured.
The eastbound lanes of the 401 were closed at Harmony but reopened just after 3 a.m. Thursday.