Former SoCal football star identified as gunman who killed 4 people in NYC building

A erstwhile Southern California shot standout has been identified arsenic the gunman who killed 4 radical wrong a Midtown Manhattan gathering Monday, including an off-duty constabulary officer.

The 27-year-old gunman, identified arsenic Shane Tamura, played shot portion attending Granada Hills Charter School successful Los Angeles County.

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Those who knew Tamura erstwhile helium was a young jock accidental they ne'er saw immoderate signs of immoderate problems and that each helium was focused connected was football.

Tamura, wearing assemblage armor and carrying an M4 battle rifle, changeable and killed 4 people, including an off-duty New York Police Department serviceman who was moving information successful the Midtown Manhattan bureau building.

After seemingly barricading himself connected the 33rd floor, Tamura was recovered dormant from what is believed to beryllium a self-inflicted gunshot wound.

File video shows young Tamura celebrating a triumph retired connected the gridiron for Granada Hills Charter school, wherever helium graduated successful 2016 aft transferring from Golden Valley High School successful Santa Clarita.

Tamura is heard successful the video saying, "Definitely had to enactment disciplined. The manager conscionable kept telling america don't clasp your heads down...hold your heads up precocious and past a bully result's gonna come."

Now, his erstwhile teammates are speaking retired aft learning Tamura is accused of the killings.

One teammate described Tamura arsenic a "goofball."

Another, who didn't privation to beryllium identified, said Tamura was a bully guy.

"He was a large teammate. He was a large feline successful general. He didn't origin immoderate problems really astatine each successful the locker country oregon connected the field," helium said. "He was conscionable a feline who truly enjoyed the sport, not problematic astatine each truthful erstwhile I recovered retired the news, I was truly shocked, I truly couldn't judge it."

There are besides reports that 1 of Tamura's parents whitethorn person been a retired Los Angeles Police Department member.

The LAPD enactment retired a connection regarding those reports that work successful part:

"The Los Angeles Police Department is alert of the online rumors and media inquiries suggesting a imaginable transportation betwixt the idiosyncratic progressive successful the caller New York shooting and our department. We instrumentality these matters earnestly and are actively investigating the information. At this time, we are moving to corroborate details and stitchery the facts."

The section added that they expect to person much accusation soon.

During a property league connected Monday evening, NYPD Commissioner Jessica Tisch said Tamura had a "documented intelligence wellness history." He precocious drove from Las Vegas to New York, and officers recovered further ammunition, a revolver, a backpack, and medicine wrong his vehicle.

The archetypal probe shows his conveyance traveled done Colorado connected July 26, past Nebraska and Iowa connected July 27, and past successful Columbia, New Jersey, arsenic precocious arsenic 4:24 p.m. connected Monday, with his conveyance entering New York City soon thereafter, Tisch said.

Tamura precocious lived successful Las Vegas, wherever helium was issued a concealed firearms licence by the Las Vegas Police Department. He was antecedently issued a enactment paper by the Nevada Private Investigators Licensing Board, which has since expired, according to records reviewed by ABC News. His past known code was successful a gated assemblage successful Las Vegas.

The motive for the deadly shooting is presently nether investigation, FBI Deputy Director Dan Bongino said earlier connected Monday.

ABC News contributed to this report.