Columbia police are investigating after a burglary alarm sounded at a local gun shop early Tuesday morning.
Authorities responded to the alarm around 1 a.m. at King's Firearms and More located at 505 North Garden Street and found signs of entry through a rear window.
When police arrived, the suspects who broke in were gone.
Officials quickly set up a perimeter due to the nature of the business and called for a SWAT team.
The Franklin Police Department sent a K9 unit to help assist with the investigation.
Shortly after daybreak, the SWAT team deployed a gas substance into the building in an effort to drive out a possible suspect out.
After determining no one was inside the building, officials started their investigation.
According to the Columbia Daily Herald, surveillance video showed four masked suspects breaking in through a window frame to get inside.
The masked suspects, all dressed in hooded sweatshirts, were seen walking across the parking lot to the store before tearing down a camera.
Columbia police said it appears the men didn't take anything but the investigation is ongoing.
A portion of North Garden Street was shutdown for several hours as a precaution. It has since reopened.
Anyone with information is urged to call Columbia police at 931-380-2721.