A 16-year-old boy with a loaded 40-caliber revolver was arrested on 11th Street and Central Avenue in Union City Sunday afternoon, Union City spokesperson Erin Knoedler said.

A concerned citizen reported seeing someone with a gun and Union City Police responded immediately.

According to other sources, Officer Sebastian Montes and Officer Carlos Pina chased the boy and took him into custody.

The teen was arrested and transported to juvenile detention.

“We can’t stress enough how important it is for community involvement if a resident sees something suspicious they should call UCPD right away,” officials say. “This is yet another example of ‘see something say something in action.”