MARTINEZ (CBS SF) — A 30-year-old Martinez man has been charged with three criminal counts for allegedly waving a gun and threatening spectators gathered at a downtown Black Lives Matter street mural, prosecutors announced Thursday.

The Contra Costa County District Office said Joseph Osuna has been charged with unlawful firearm activity, possessing a firearm, not being the weapons registered owner and exhibiting a concealed weapon in public. He faces up to three years in custody if found guilty of the charges.

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According to investigators, on July 5th Osuna drove by a Black Lives Matter mural in downtown Martinez and yelled at various individuals standing by the mural.

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One of the bystanders exchanged words with Osuna and moments later he made a u-turn to come back to the bystander.

Osuna allegedly exited his vehicle and pulled out a loaded revolver and pointed the firearm at the bystander. Fortunately, police officers from the Martinez Police Department were nearby and were able to respond to the scene.

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They quickly spotted Osuna’s 2015 Jeep Wrangler and pulled him over. Officers recovered the revolver from in his vehicle and he was taken into custody.