Regulators with the National Highway Traffic Safety Administration (NHTSA) are opening a probe involving a fatal crash involving a Tesla Model Y. The accident, occurring on July 19, found a Tesla striking a tractor-trailer truck in Virginia, fatally wounding the driver of the automobile. These regulators believe that the 57-year-old Tesla driver was relying on the company’s advanced driver assistance programs at the time of the accident, according to a report by Reuters.

The Fauquier County Sheriff's Office provided more details on the accident, saying that the tractor trailer attempted to turn onto a highway from a truck stop when the Tesla struck the side and slid underneath the trailer. The Tesla driver was pronounced dead at the scene. As for the truck driver, authorities issued a summons for reckless driving.