Shortly after 5:00 p.m. last night, emergency crews responded to a collision between an ATV and SUV on Riverview Drive east of Orchard Heights Drive in Chatham.
The ATV was originally travelling in the eastbound lane but crossed over into the westbound lane and collided head on with the Chevrolet Tahoe.
Both riders of the ATV, a 16-year-old Chatham youth and 18-year-old Chatham man were injured and transported to the Chatham-Kent Health Alliance.
The 16-year-old was later transferred to Victoria Hospital in London with life-threatening-injuries.
He remains in critical condition this morning.
The driver and passenger of the Tahoe, a 54-year-old Tilbury man and 76-year-old Chatham woman were also transported to the Chatham-Kent Health Alliance for medical attention.
The collision remains under investigation by the Chatham-Kent Police Service Traffic Unit.
Anyone with information is asked to contact Constable Mike Pearce at 519-355-1092.
