POLK CITY (970 WFLA) -- A man, a woman and a child have died in a crash between a car and a semi-trailer north of Polk City.

The Polk Sheriff's Office says the car pulled out of Deen Still Road onto State Road 33, failing to stop at the stop sign. A semi-trailer caught the vehicle and dragged it 400 feet down the road.

Sheriff's deputies say the man and woman in the front seat died, as did a child who was also in the front seat. Two children have been airlifted to Arnold Palmer Children's Hospital in Orlando, in critical condition. A baby in the back seat has been taken to Lakeland Regional Medical Center with less serious injuries. Deputies are still working to notify relatives.

The driver of the semi was unhurt.