Update, 10:40 a.m. Friday

A 17-year-old on a motorbike who was injured in a Thursday afternoon accident at Reston Parkway and Wiehle Avenue remains hospitalized with life-threatening injuries, Fairfax County Police said.

The boy was injured when he attempted to make a left hand turn on to Wiehle Avenue about 3:51 p.m.

Two SUVs — an Acura MDX and a Lexus GX470 — were headed southbound on Reston Parkway and had the right of way, said police public information officer Bud Walker.

The motorbike driver made the left turn and crossed into the path of the SUVs. He was struck by the Acura, which was in the left lane. The Acura then struck the Lexus.

Walker said neither speed nor alcohol was a factor in the accident. Neither vehicle driver was injured or charged. It is not known if the teen was wearing a helmet. Police did not release the teen’s name.

Witnesses said the teen’s bike was on fire and he flew about eight feet in the air after he hit the SUV. They also said bystanders administered CPR until rescue crews arrived.

Original story, 7 p.m. Thursday: Two of Reston’s major roads were closed for more than an hour during Thursday’s evening rush hour as Fairfax County Police investigated a crash involving the driver of a car and a man on a motorbike.

The accident occurred on Reston Parkway near Wiehle Avenue at 3:51 p.m., police said.

The man was injured and was taken to the hospital, police said. They did not release his name or the extent of his injuries.