An 18-year-old kayaker was killed late Sunday afternoon on a Texas lake when she was struck by a jet ski.

The operator of the jet ski fled the scene with an unknown man, but her passenger remained on the scene and spoke with first responders, according to Texas Game Wardens. It’s not known if she identified the jet ski driver.

The victim of the Grapevine Lake hit-and-run was identified as Ava Renee Moore. Witnesses brought her to the lakeshore and attempted life-saving measures until medics arrived to take her to Baylor, Scott & White Hospital in Grapevine, where she was pronounced dead.

The vehicle taken by the suspect and the unknown man to leave the area collided with another vehicle while leaving the park. Grapevine Police are investigating the traffic accident, while Texas Game Wardens are investigating the fatal hit-and-run.

Investigators released a photograph of the suspect and asked anyone with information to contact them.