Police in Alabama opened an internal investigation Sunday after video shared online appeared to show officers dragging several people out of an apartment before using a stun gun.
The Tuscaloosa Police Department said it was called to the property at around 3:20 a.m. Sunday in response to a complaint about loud music.
After being made aware of the videos showing the incident, the department sent the footage to internal affairs investigators, the City of Tuscaloosa said on Twitter.
"A full investigation of the circumstances that are depicted in these videos will be conducted," Tuscaloosa Police said in a separate statement. "All appropriate measures [will be] taken to ensure the integrity of the Tuscaloosa Police Department in serving the citizens of Tuscaloosa."
At least three videos shot from different angles appeared to show portions of the incident, although the authenticity of the footage could not be immediately verified by NBC News. It was also not what occurred before the cameras started recording.
At least one of the videos, which did not show how the confrontation started, showed a man in a Tuscaloosa Police jacket speaking to a group of people in the doorway of a home.
The officer appears to step over the threshold, grab one of the people by the shirt and tell him he is under arrest for "harassment, for grabbing my arm." The videos depict other police officers arriving and pulling the the suspect and two other people out of the property.
Another video shot from across the street appears to show one of the officers firing a stun gun in the direction of the man who was told he was under arrest. This can also be heard in other videos. Another officer can be seen appearing to strike the arrested man on the back with what appeared to be a flashlight or baton.