By Marc Ramirez Liz Farmer

A concealed carry holder is being heralded as a hero by Arlington police for preventing mass murder by killing an "incoherent" gunman at a sports bar Wednesday evening. Before he was shot about 6:15 p.m., the gunman killed the manager of Zona Caliente in the 6500 block of South Cooper Street, police spokesman Christopher Cook said.

Police later identified the gunman as 48-year-old James Jones of Grand Prairie and the victim as 37-year-old Cesar Perez of Duncanville. The man who killed Jones has not been identified. Authorities later found two loaded guns and two knives on Jones, Cook said Thursday.
"We do believe he had the capacity to do much greater harm," Cook said.

When Jones entered the business, some witnesses told police, he started yelling incoherently while standing at the bar.
"People didn't know who he was yelling at."
Perez was trying to talk to Jones when he was fatally shot. Police do not believe they knew each other.
That's when a customer fired his gun at Jones.
"After he was struck once, the suspect started shooting at the front door," Cook told the Arlington Voice. "We know people were trying to escape, but we're not sure if he was just trying to harm others."

More than a dozen customers and a handful of employees were in the sports bar at the time of the shooting.
Cook said the customer, who was dining with his wife, "prevented further loss of life."
The customer was carrying a handgun under the Texas concealed handgun license program, Cook later confirmed.
"We're treating the good guy as sort of a hero," he said.

One other person was hurt, though it wasn't clear if it was a restaurant customer or employee. Police said that person was injured by glass while trying to get out. Friends took to social media to honor Perez.

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