Police in Louisiana arrested a woman on Sunday for a hit-and-run that left a coworker critically injured.

Slidell Police said paramedics were called to Greenbriar Community Care Center just after 11 p.m.for a report of woman who had fallen in the parking lot. The woman was tranported to a neaby hospital, where medical personnel determined that her injuries were far more consistent with having been hit by a vehicle than with a fall.

The hospital notified police, which launched an investigation.

Investigators went to the center and obtained surveillance footage, where they saw the victim — an employee of the center — walking across the lot when she was struck by an SUV “backing up recklessly through the parking lot.”

The driver of the SUV was identified as Lillian Sellers, 67, another employee of the center. She was seen on the surveillance video exiting her vehicle, picking up a broken piece of her vehicle’s bumper, and then going in “to work as if nothing happened.”

“Rather than rendering aid or notifying emergency personnel, Sellers told co-workers that a ‘woma fell in the parking lot’ and needed help,” police said.

Staff of the center went outside to assist the woman and called 911, “not knowing she had been struck by Sellers’ vehicle and no knowing the extent of her injuries.”

Sellers was arrested and charged with reckless operation of a motor vehicle, hit and run driving causing serious bodily injury, negligent injuring, and obstruction of justice by tampering with evidence.

Several witnesses told police that it wasn’t unusual for Sellers to driver erratically in the parking lot, and when officers tried to question her about the incident, “she just shrugged her shoulders and provided no explanation.”

Police stressed that they did not believe Sellers hit the woman intentionally. They said she is seen in the video running inside to clock in to work — “presumably running late” — and then rushing back out to get to her assigned parking location.

“The driveway is part of a larger one-way cul-de-sac around the facility, which was why Sellers was driving in reverse, in order to get into a parking spot,” police said. ” … What is intentional is that Sellers obviously knew she struck a person and went as far as to remove evidence to cover her tracks.”

The victim, who was not named, remains in critical condition.