Here's what can happen when you pull a gun on a store clerk with a concealed carry permit

A Florida convenience store clerk with a concealed carry permit fatally shot an intruder who pulled a gun on him during an attempted robbery, deputies told WJAX-TV.

The clerk at the Prime Stop Food Store in Orange Park became suspicious when a man entered the store around midnight Saturday wearing sunglasses, the station said.

Those concerns turned out to be well-founded, as 29-year-old William Smith pulled out a gun and attempted to rob the store, Clay County deputies told WJAX.

But the clerk grabbed his own gun and shot the intruder, deputies told the station, adding that Smith was found on the ground next to a small-caliber handgun and pronounced dead at the scene.

Deputies added to WJAX that the motor of the suspect's car was running in the store's parking lot.

Smith's family told the station he was drug addicted. "In all honesty, if he didn’t die this way, he would have ended up dying — he would have ended up killing himself on drugs," his sister told WJAX.

The suspect's mother, Tamara Cartrette, told the station her family doesn't blame the clerk for Smith's death.

“We have no ill will against the person that felt they had to retaliate because he had the gun," she told WJAX. "Our heart goes out to that family also.”

The station said the incident was captured on surveillance video but authorities haven't yet released the footage.