UNLV gunman was a career professor who had applied for a job at the school, source says

The shooter, identified by law enforcement sources as Anthony Polito, died at the scene after a confrontation with police outside of a university building, according to Las Vegas Metro Sheriff Kevin McMahill.

CNN was told the investigative theory on a possible motive is that Polito sought a position at UNLV but was not hired. He had worked for schools in Georgia and North Carolina, a law enforcement source told CNN.

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