UNLV shooting suspect was professor who had applied for job: AP source

The gunman suspected of killing three people and critically wounding a fourth before dying in a shootout with police at the University of Nevada, Las Vegas, had unsuccessfully sought a job at the school, the Associated Press reported.

Law enforcement sources told the news agency the gunman in Wednesday's shooting was a professor who had previously worked at East Carolina University in North Carolina. The source was not named because they weren't authorized to release information from an ongoing investigation to the public.

The Las Vegas Metropolitan Police Department did not immediately respond to a request for comment.