A 20-year-old Newmarket man is dead and four people were injured after a head-on crash in Innisfil Tuesday night.

The crash happened on the 10th Sideroad between the 6th Sideroad and Innisfil Beach Road at 6:50 p.m.

South Simcoe Police say the man’s car crossed the centre line and hit an oncoming car.

Two passengers in the man’s car were taken to hospital with non-life threatening injuries and a 40-year-old woman and her 15-year-old daughter who were in the second car were also treated in hospital.

Investigators are still looking into the cause of the crash but police say speed is believed to be a factor.