Michigan State shooter Anthony McRae's brother said he changed after mom died: 'He became bitter and angry'

Michigan Gov. Gretchen Whitmer on Tuesday asserted that mass shootings like the one on Michigan State University's campus is a "uniquely American problem." Rep. Elissa Slotkin, D-Mich., also spoke.

The Michigan State University gunman's brother said "only God knows" why Anthony McRae opened fired on the East Lansing campus Monday night, but he said Anthony hasn't been the same since their mom died nearly three years ago.

Anthony McRae, 43, didn't have any connections to MSU, police said, which makes the deadly attack more puzzling.

His brother Michael McRae told Fox News Digital that his brother "changed" after their mom died in September 2020, and Anthony stopped taking care of himself, quit his job, wouldn't look for work and spent all his time playing video games.

"He lived a sheltered world," Michael told Fox News Digital in a phone interview Tuesday afternoon. "He started changing. He was getting more and more bitter and angry. I'm asking him, ‘What’s on your mind?' But he wouldn't talk to me."

MSU SHOOTER WHO KILLED 3 STUDENTS, INJURED 5 IDENTIFIED AS ANTHONY MCRAE: LIVE UPDATES

The suspect, Anthony McRae, in a deadly shooting spree at Michigan State University in East Lansing Monday night died of an apparent self-inflicted gunshot wound, authorities said. (MSU Police & Public Safety/LOCAL NEWS X /TMX)

Michael said he tried to take him to church as a way to help, but Anthony "jumped in and out of the Bible."

"I told him the devil don't make you do nothing you don't want to," Michael said. "He was a good kid. He was a good worker. He just got out of control. I tried helping him."

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Anthony McRae fatally