North Fayette bar customers disarmed a man illegally armed with three guns who killed one person and shot two others early this morning, Allegheny County police said.
County police Lt. Andrew Schurman said 25-year-old David Mazzocco, of Imperial, began shooting at the Fort Pitt Inn on Steubenville Pike moments after a heated text-message exchange with a girlfriend.
Mr. Mazzocco is in custody at county police headquarters and will be charged with homicide, attempted homicide, several counts of aggravated assault and reckless endangerment and weapons violations, Lt. Schurman said.
None of the handguns was registered to Mr. Mazzocco, who county police said was barred from owning guns.
Police also found a fourth gun -- a loaded AR-15 assault-style rifle -- inside Mr. Mazzocco's truck in the parking lot, Lt. Schurman said.
County police are investigating the registered owners of the handguns and how Mr. Mazzocco acquired them.
North Fayette police went to the bar after a 911 call at 12:45 a.m.
Investigators believe Mr. Mazzocco was inside the bar having relationship problems via text when he left the bar upset by the conversation.
He returned with three handguns, ordering two friends in the bar to get out. They protested, and Mr. Mazzocco pointed a gun at one of them before they left, Lt. Schurman said.
Mr. Mazzocco started shooting, hitting three people inside, Lt. Schurman said.
Two people were shot in the head.
According to the Allegheny County medical examiner's office, James Adams, 29, from Imperial, was killed. Another person is in critical condition.
Two other customers fought back, disarming Mr. Mazzocco and holding him for officers, county police said, although one had a gunshot wound in an arm.
Police did not release their names, but Lt. Schurman praised their efforts, calling them courageous.
"Obviously it could have been a lot worse," he said.
Lt. Schurman said there may be some "underlying factors affecting" Mr. Mazzocco, but he did not elaborate.
Investigators are not sure whether the shooting was planned.
Lt. Schurman said police do not believe the nine or so bar patrons inside had any connection to Mr. Mazzocco or were specific targets of the gunfire.
Edward Adams, of Clinton, said his son was with living with a friend in Imperial. He was getting back on his feet after a medical problem last year.
James Adams worked at a convenience store and DJ'ed karaoke by night, including at the Fort Pitt Inn. He wasn't working Sunday night but was at the bar to check on a friend, an employee there, who had lost a loved one.
The elder Mr. Adams said police notified him of his son's death about 8:30 a.m.
"He was my only son," Mr. Adams said. "I'm going to miss him terribly."
Molly Born: firstname.lastname@example.org, 412-263-1944 and on Twitter: @borntolede. First Published March 11, 2013 11:00 AM