Editor’s Note: Connecticut State Police initially said Sophie Ringquist was not from Burlington. This story has been updated to reflect their correction.

BURLINGTON, Conn. (WTNH) — A 17-year-old girl is dead after she “fell out” of a moving pickup truck early Sunday morning in Burlington, state police said.

Troopers responded to the report of a motor vehicle crash just before 1:30 a.m.

State police said a Chevy Silverado 2500 HD, driven by an 18-year-old man from Harwinton, was going in an unknown direction on Fieldview Drive, near Polly Dan Road, when “unknown events occurred,” and the front passenger “fell out” of the truck while it was moving.

The passenger, identified by state police as Sophie Ringquist from Burlington, was taken to a hospital with serious injuries. Authorities said she was later pronounced dead.

The medical examiner’s office confirmed to News 8 the cause of her death was blunt impact injuries to her torso.

State police said they were notified of the incident after Ringquist was taken to the hospital.

No charges have been filed in the case.

Authorities are asking witnesses to come forward and are looking for video footage that will help them determine what happened before Ringquist fell out of the truck.

Anyone with information is asked to call Trooper Khariton #1433 or Sgt. McAlpin #187 at Troop L by calling (860) 626-7900.