Two teenagers suffered life-threatening injuries when their vehicle left a road and struck a tree in the Clifrton area of Fairfax County, the police said. (Fairfax County police photo)

Two teenagers were critically injured Tuesday afternoon in a car crash in Fairfax County, the police seaid. A third teenager was also injured.

The crash occurred about 1:55 p.m. on Fairfax Station Road near Colewood Estates Road in the Clifton area, according to the police. They said investigators thought speed might have played a part.

According to the police, a vehicle was going west on Fairfax Station when it left the road and struck a tree. They said the two victims with life-threatening injuries were flown to a hospital by helicopter.