One adult was killed when a passenger car collided with a tri-axle coal truck in Clearfield County.

The crash happened on Route 879, also known as Clearfield-Shawville Highway, on Monday morning.

Police said, Pauline Dilley of Johnsonburg was killed in the accident.

The Lawrence Township Fire Department assistant chief said two adults and two children were trapped inside the passenger vehicle.

Two children and one adult were airlifted by medical helicopter from the crash site. One adult was pronounced dead at the scene.

Officials said the driver of the vehicle was Cappyanna Levenduski of Kersey. Police said the two children were 18 months and two years old.

The coal truck driver was taken to the hospital.  The driver's daughter told 6 News he received several stitches but will be OK.

Pennsylvania State Police are reconstructing the crash as part of the investigation.

Route 879 is closed from the Interstate 80 interchange at Exit 120 to the Shawville Bridge in both directions.

The Pennsylvania Department of Transportation expects Route 879 to be closed until at least 6 p.m. as emergency responders work in the area. Eastbound Route 879 is open to Sapp Brothers Travel Center, while the westbound lane closure starts at Airport Road.

Officials with PennDOT said all traffic is to use alternate routes, and drivers should proceed with caution and be prepared for stopped or slow-moving traffic and emergency personnel.

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