Three teenage girls were critically injured Wednesday after their car darted into on-coming traffic for an unknown reason.

The girls, two 17-year-olds and a 16-year-old, reportedly had just been attending an advanced math program at Salt Lake Community College in West Jordan. At least one of the girls reportedly attended Hillcrest High School, said West Jordan police Sgt. Greg Butler.

Just after 11 a.m., the car the girls were in was traveling on 9000 South near 2600 West when, "it just shot over for no apparent reason," Butler said.

On-coming vehicles had no time to get out of the way, he said. The car was hit by a pickup and an SUV, Butler said.

None of the girls was wearing a seatbelt, he said. They were unresponsive and trapped in their vehicle when emergency crews arrived. The West Jordan Fire Department's Heavy Rescue team had to cut the roof off their car to get the girls out, Butler said.

Three medical helicopters were called to the scene but only two were used. One girl, who was in the backseat, was in extremely critical condition, Butler said. She and another girl were taken to local hospitals by medical helicopters. The third was taken by ambulance.

The drivers of the two vehicles that hit the girls were not injured.

Drugs and alcohol did not appear to be factors in the crash, Butler said.