An investigation is underway to find out why a Georgia police department posted a video on social media of white people shooting a photograph of a Black man for target practice, Atlanta station WSB reports.

Villa Rica Mayor Gil McDougal said the post was taken down and apologized for the incident that the police chief said was unintentional.

The video and still images were taken at a recent firearms safety class for civilians conducted by the Villa Rica Police Department. They were posted on the department’s Facebook page and quickly received hundreds of comments from outraged social media users.

Following the backlash, McDougal released a statement calling the video and images “offensive,” WSAZ reported.

“I am personally embarrassed by it, and as soon as it was brought to my attention last night I and other city staff began to address this situation,” the mayor stated. “This administration will be asking our human resources director and the city attorney to select an outside organization to review how this entire incident came about, not just the post itself.”

Dominique Conteh, president of the Carroll County NAACP branch where Villa Rica is located, said there was a strong reaction to the post.

“I started getting tagged from all the residents and organizations pertaining to the silhouette target of just this individual Black man, who in my opinion had been dressed to look like a thug,” Conteh stated, WSAZ reported.

Conteh said the civil rights organization will address the situation, adding, “This is just the beginning. This is just the catalyst, and it’s time for a change.”

Police Chief Michael Mansour told WSB that mistakes were made.

“The perception of it looks like we have people just shooting at Black guys and that’s not at all what it was,” he stated. Mansour said images of white people were also used for target practice that day but that video was not posted.

According to Mansour, his officers somehow didn’t think that posting only the images of Black man targets would cause controversy.

“We did not notice that because we don’t look at that,” he said. “Therefore, it was just a mistake.”