Four people have been taken to the hospital with life threatening injuries following a head-on crash on Hwy. 3 in Tecumseh.
Emergency crews were called just after 9am to Hwy. 3, east of Walker Rd.
The OPP say a Lexus and a Volkswagen struck head-on and both drivers and their passengers were taken to the hospital.
As a result, two people in one of the vehicles are in police custody in hospital pending a criminal investigation.
Hwy. 3 between Walker Rd. and Sexton Side Rd has since reopened. The area was closed for seven hours.