Indianapolis authorities are believe that a serious collision which resulted in three deaths was caused by a driver participating in an illegal street race, according to reports.

Witnesses told reporters that the driver of a Ford Mustang, Connor Tomlinson, lost control of his vehicle on South East Street on December 23 before it struck the median and flipped into the path of an oncoming Chevrolet Trailblazer in the other lane. All three occupants of the SUV were killed in the collision, including a 12-year-old girl who died in the ambulance on the way to a local hospital.

Witnesses reported seeing Tomlinson’s Mustang and another vehicle revving their engines while stopped a a red light. When the light turned, both vehicles apparently sped away; investigations revealed that Tomlinson’s speedometer indicated he was going 60 mph at the time of the collision.

Tomlinson and his three passengers were taken to a hospital for treatment of minor injuries. Among these treated was a 10-year-old girl who was the only one to remember the collision. Authorities are still investigating the collision to determine what, if any, charges will be filed.