A man in northern Georgia fell from a wall and died after police stunned him with a Taser during a foot chase late Thursday, authorities said. Georgia Bureau of Investigation (GBI) will reportedly probe into the matter.

The incident took place when a robbery unit of DeKalb County police, patrolling the area, pulled over the man during a traffic stop. The man said he had a weapon and fled the scene after an officer secured the weapon, Assistant Police Chief Brian Harris said, according to Atlanta Journal-Constitution.

Another officer, who was not identified, reportedly chased the man who tried to scale an 8-foot wall. The officer then used Taser on him, following which he fell to the other side, according to reports.

“He had the Taser still attached to him. He was handcuffed, but he was unconscious,” Natosha Davis, who witnessed the incident, told Channel 2 Action News.

Police found the man unconscious and called medical help. They rushed him to a hospital where he was pronounced dead.

According to 11Alive, the GBI will look into a video of the incident filmed by a police officer.

In March, DeKalb County Police Department bought 400 Taser guns. In the same month, DeKalb County Sheriff Jeff Mann handed over videos of two controversial 2012 Taser jail incidents to the FBI. The videos allegedly showed that jail authorities misused Taser and shocked the inmates. The allegations reportedly led to the resignation of a sergeant at the facility.