At least three are dead and more than a dozen people were injured when a sedan traveling at a high rate of speed traveling southbound on Main Street collided with a crowd of people at OSU's homecoming parade, according to the Payne County Sheriff's Department.

Twenty seven people were transported away from the scene. Ten are assumed critical.

The collision happened at Main Street and Hall of Fame at around 10 a.m. Multiple people were transported by personal vehicle, including small children. Multiple air ambulances have been used as ambulances from the surrounding community. Lesser injured people are being transported from the scene by an Oklahoma State University bus.

Konda Walker, from Anchorage, Alaska, a 1991 OSU alum, was in town to enjoy the homecoming festivities.

"At first we thought it was part of the show," Walker said. "People were flying 30 feet into the air like rag dolls."

Dave Kapple, Houston, Texas, was here to enjoy the festivities with his son.

"We were probably 10 feet away, when the vehicle came barreling through. We heard somebody scream, 'Look out!.' (He) plowed through a police motorcycle, and then a crowd of people," Kapple said. "People were flying everywhere."

Several witnesses said the driver was a woman.

"I was sitting right here and she came plowing through," Larry Smith, a parade goer said. "All I saw was bodies flying, kids flying. It was horrible."

A statement from the OSU Communications office read: Oklahoma State University is saddened by the tragic parade incident earlier this morning. Our thoughts & prayers are with those affected.

More updates will follow