Michigan State gunman was loner who felt 'slighted in some way,' legally purchased two 9mm handguns: police

 Fox News correspondent Mike Tobin has the latest on the campus gun violence on 'Special Report.'

The father of Michigan State University gunman Anthony McRae described his son to police as a loner who never left his room, discounting a note in which McRae claimed to be the leader of 20 killers, officials said Thursday. 

"He pretty much sat in his room most of the time. He ate, went to the bathroom in there, so he pretty much never left his room," Michigan State Police Lt. Rene Gonzalez said at a press conference on Thursday. 

"His father didn’t believe that he had any friends, let alone 20 of them that would help him… So we kind of determined that he was the lone shooter in this."

McRae, 43, opened fire inside an academic hall and the student union at 8:18 p.m. on Monday evening, leaving three undergraduate students dead and five others wounded. 

This booking photo provided by Michigan Department of Corrections shows Anthony McRae. (Michigan Department of Corrections/AP)

He turned the gun on himself as police made contact with him about 3.8 miles off-campus after an hours-long manhunt. 

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McRae was carrying one 9mm handgun and had another 9mm handgun in his backpack. Police also found eight loaded magazines in his backpack, two empty magazines, and a two-page note in his wallet that contained threats to businesses, schools in New Jersey, and a church. 

"It appears, based on the content of the note, that he felt that he was slighted in some way by people or businesses," MSU Police Chief Chris Rozman said Thursday. 

"Did a mental health issue amplify that, or was it a component of that? We’re not sure at this point. I