Teen Sought Help Moments Before Her Boyfriend Allegedly Ran Her Over With His Truck

A Connecticut man turned himself in last week after state troopers accused him of running over his 17-year-old girlfriend with his truck last year, authorities announced Monday.

Cooper Anderson Ouellette, 19, is charged with manslaughter and delivery of alcohol to a minor in the death of his girlfriend, who died in May 2023 after being hit by his truck, according to an arrest warrant shared by authorities.

The victim’s name was redacted in the document, but reports from local Fox affiliate WTIC-TV identified her as high school junior Sophie Ringquist, 17.

Using evidence collected from Oullette’s cell phone, vehicle data, witness statements, photos and videos, the warrant describes the intense moments thought to have led up to Ringquist’s death.

The night of the incident, Ringquist and Oullette were at a party together. Witnesses at the party told authorities that the couple were arguing throughout the night and said Ouelette had kicked Ringquist with his boot and shoved her to the side of his truck, according to the warrant.

One witness told police that Ringquist called multiple people to try and get a ride home, according to the warrant. The witness said that she saw Ouellette getting mad at Ringquist for calling others for a ride and that he grabbed Ringquist’s phone out of her hand.

Another witness told police that they received a call from Ringquist, stating that Ouellette was drunk and was following her around the party, according to the warrant.

Ringquist and Ouellette left the party together. Oullette was driving “erratically,” and pulled over at one point to record Ringquist with his phone, according to the warrant.

The video depicted Ringquist inside Ouellete’s moving truck as she attempted to get out,