A police officer is on administrative leave after he fired a stun gun into a 62-year-old woman's back during an arrest in a Tallahassee, Florida neighborhood.

At a news conference on Wednesday, Tallahassee Police Chief Michael DeLeo announced the investigation after authorities obtained a video capturing the incident.

According to police, the officers were responding to recent complaints from citizens about drug deals in the neighborhood located just a few blocks west of the governor's mansion. The woman, Viola Young, approached one of the police cars and an officer asked the woman to stay back. Police said that's when Officer Terry Mahan approached Young and attempted to take her into custody.

In the video, the woman appears to be walking away when the officer uses his stun gun, striking her in the back. She falls face-first to the ground. Officers surrounded her and eventually helped her to her feet and walked her to a squad car, the video shows. Police didn't release the name of the person who shot the video, but he can be heard saying on the video: "Done tased a lady for nothing."

(The Associated Press contributed to this story)