Two men were taken to hospital with life-threatening injuries after a head-on collision in Milton Thursday evening.

Halton police said it happened at around 5:20 p.m. on Sixth Line Nassagaweya Line, south of No 25 Side Road.

A southbound Honda Civic being driven by a 20-year-old Milton man collided with a northbound Mazda being driven by 29-year-old man from Acton, police said.

Both were transported to hospital with serious, life-threatening injuries.

It’s not yet clear what caused the collision.

Halton police are asking anyone with information about the crash to contact them.