A 26-year-old woman driving down the Wisconsin highway in the US was fatally shot by a child in the backseat who got hold of a gun, according to witnesses. The incident took place on Tuesday at 10:30 a.m. on Highway 175, near Miller Park, a baseball stadium in Milwaukee.

“Initial witness accounts indicate that a child in the back seat of the vehicle got ahold of a gun and discharged the firearm, sending a single bullet into the driver’s back,” the Milwaukee County Sheriff’s Office said in a statement, as quoted by NBC Chicago. “The MCSO investigation into the death is on-going,” it added.

The woman was pronounced dead at the scene as she was not breathing and was found without a pulse. She was given CPR by the Sheriff’s deputies until the Milwaukee Fire Department arrived.

“People were panicking and you could tell people were generally trying to help,” the WGN-TV quoted a witness, Kourtney Blevins, as saying. “I know there’s some little boys down there which they put in a police car. It was two little boys — it looked like some kids were involved, unfortunately.” The child’s age and how he or she got hold of a fully loaded gun is still unclear, the New York Daily News reported.

The southbound lanes of the Wisconsin highway remained closed for several hours but they opened around 2 p.m. on Tuesday.

The incident came less than a couple of months after a pro-gun mom from Florida was shot by her 4-year-old son while she was driving. However, Jamie Gilt, the mother, survived the accident and the child was also not hurt in the incident.

The bullet pierced through the cushion of the car seat and struck Gilt as the child accidentally fired the gun from the back seat. The mother was not immediately charged as the gun was legally owned by her. But the investigations into the incident are also ongoing, the New York Daily News reported.