Four teenagers were injured in a single vehicle crash north of Goulais River early Sunday morning — and one remains in serious condition.

Provincial Police in Sault Ste. Marie said the 18-year-old driver was impaired.

OPP officers went to the crash near Havilland Shores Drive, shortly after 4 p.m. on Sunday. A black pickup truck had lost control, crashed into a ditch and hit a tree. Police said the vehicle was demolished.

The driver, along with his passengers — two 17-year-old girls and one 18-year-old boy — were taken to hospital.

Three were released, but one girls remains in hospital.

The 18-year-old driver has been arrested and charged with two counts of impaired driving causing bodily harm. He is expected to appear in court on Oct. 21.