A 16-year-old West Forsyth High School student was flown to an Atlanta hospital Wednesday morning after a two-vehicle collision at a northwestern Forsyth crossing, authorities say.

Capt. Frank Huggins of the Forsyth County Sheriff's Office said the teen, whose name has not been released, was listed in critical condition at Grady Memorial Hospital.

Huggins said the teen was being treated for head and internal injuries.

The Forsyth County Sheriff's Office is investigating the wreck, which occurred about 7:45 a.m. at Heardsville and Watson roads.

Timmy Millwood, 43, of Franklin Goldmine Road, said at the scene that he was traveling north on Heardsville in his 2000 Ford F350 pickup truck when the teenager, southbound in a 1994 Ford Mustang, attempted to turn left onto Watson from Heardsville.

At that point the vehicles collided.

"I didn't know what to think, it happened so fast," said Millwood, who was not injured in the wreck.

Forsyth County Fire Capt. Jason Shivers said firefighters cut the roof off the Mustang and pried the door open to remove the teenager from the vehicle. He said the teen was unconscious when emergency responders arrived.

"It was obvious the patient needed to be flown to a medical center," Shivers said.

The teen was taken to Ducktown Park, about 200 yards north of the wreck, where he was transferred to a helicopter.

Shivers said standard lifesaving measures were conducted on the way to the park.

He said the teen, who was wearing a seat belt, was "traumatically injured" and his vital signs, such as blood pressure, pulse and respiration, were unstable.

"He was slumped over to the right, kind of across the center console, when fire [personnel] arrived," Shivers said.