CHATHAM COUNTY, Ga. (WSAV) — A suspect died after an hours-long standoff with local SWAT teams Tuesday night.

The Georgia Bureau of Investigation is now conducting a use-of-force investigation into the incident that lasted more than six hours.

According to the Chatham County Police Department (CCPD), officers were dispatched at 1:24 p.m. to a home on Fort Argyle Court for a mental health check. However, 65-year-old Mark McKinley Stanton wouldn’t come out of his home and he showed a gun to police, prompting a CCPD SWAT team to dispatch.

The man then shot at SWAT members after they shot pepper balls into the home. He hit several police cars and nearby homes but no one was hurt and police didn’t shoot back, CCPD said.

The Savannah Police Department SWAT Team arrived on the scene where they negotiated for hours and eventually entered his home around 8 p.m.

According to the Georgia Bureau of Investigation (GBI), SWAT members found Stanton in a bedroom with a gun in his hand. He ignored verbal commands and resisted arrest, GBI said.

Officers then used “less lethal weapons to gain compliance,” according to the GBI. Stanton was eventually handcuffed and removed from the home.

The GBI said SWAT members noticed Stanton became unresponsive shortly after being taken into custody. They attempted to render first aid at the scene.

Stanton was then taken to a local hospital where he was pronounced dead, according to the GBI.

The GBI Medical Examiner’s Office will conduct an autopsy on Stanton. Meanwhile, the agency will conduct an independent investigation of the use of force. Once complete, the investigation will be turned over to the Eastern Judicial Circuit District Attorney’s Office for review.

According to the GBI, no officers or civilians were injured during the incident.