FORT WORTH, Texas — Fort Worth police are investigating a video that apparently shows an officer spraying passing motorcycle riders with mace.

An investigation was begun immediately upon receipt of the video this morning. At this time, detectives are trying to locate witnesses and identify the officer involved,” Cpl. Tracey Knight. told NBC DFW.

The video was also posted on Facebook by Chase Stone where it has been shared over 2,700 times.

He wrote:

“During the big ride today we had a law enforcement officer, that looked as if he was pulling over a truck, stepped out of his vehicle with mace in hand and began spraying it towards the riders with intention of causing an accident!!! This is a video EVERYONE NEEDS TO WATCH!! Law enforcement is here to protect and serve, not intentionally try to harm others…”

According to an incident report obtained by NBC DFW, a driver was stopped around 3 p.m. along the U.S. 287 freeway and cited for “blocking traffic” to record motorcycles driving “recklessly.”

Police said the investigation is ongoing.