A man who accidentally killed his girlfriend in 2015 with a gun he was trying to sell is now going back to jail.

In 2015, Grubbs was standing outside his vehicle in a parking lot in Bath, showing a handgun to a potential buyer, while his girlfriend, Chelsea Jones, was sitting in the vehicle. The gun suddenly went off as he was handling it, and the bullet fatally struck Jones. The former Thomaston man was originally charged with manslaughter, but cut a deal with prosecutors to plead guilty to domestic violence reckless conduct. He served 19 months in prison for killing his girlfriend.

On Wednesday, Dylan Grubbs, 27, had his probation revoked after pleading guilty to violating it by using drugs and for skipping out on substance abuse treatment. WABI-TV reports he also admitted to operating a motor vehicle in March, after his license was revoked.