A car carrying a family of five crashed and flipped over Friday on the Saw Mill River Parkway in Chappaqua.

Westchester County police say one passenger, under the age of five, had to be air-lifted to Westchester Medical Center. The driver and three other passengers were taken by ambulance. All are listed in serious condition.

Police say the family, two adults and three children, was traveling northbound on the parkway and crashed just a mile south of Exit 33. Their rented Buick sedan somehow veered off the road, crashed into a tree and flipped over, police say.

?There [are] no fatalities as of now. I don't know if that'll change,? says Capt. John Hodges of the Westchester County Police Department. ?We're waiting to get updates from the medical center.?

The accident happened at about 5 p.m. Friday afternoon. Drivers on the parkway noticed the vehicle had flipped over and alerted authorities.

Police say the children were in safety seats and the adults were wearing seat belts. Police say a number of questions remain unanswered in the Fourth of July accident - including the identity of the family and whether or not alcohol may have played a factor in the crash.