A Louisiana mom faces charges after an off-duty officer slammed into a car and killed her 1-year-old daughter, according to officials.

The Baton Rouge Police Department determined Brittany Stephens played a role in her daughter Seyaira’s death in October because the baby wasn’t buckled properly in the SUV, according to a Thursday report from news station WAFB.

Stephens, 20, was riding as a passenger in the SUV when Christopher Manuel, a Baton Rouge Police corporal, reportedly crashed into the vehicle. Authorities said that Manuel was driving 94 mph at the time of the fatal accident.

Police said the infant was in a car seat “wedged between the front seats on top of front center console” when the accident occurred.

“During the course of the investigation, investigators learned during an interview that she admitted to placing the car seat in the vehicle and placing the child in the car,” Sgt. Don Coppola told WAFB.

The mom was charged with negligent homicide and seat belt violations in connection to the high-speed crash.

Manuel, 27, was charged with negligent homicide and speeding. He was placed on paid administrative leave from the police department.