Colleges nationwide are tapping increasingly high-tech tools to try to prevent or respond to violent attacks, but their open gates can complicate efforts to bolster campus security, school officials and safety experts said in the wake of Monday’s fatal mass shooting at Michigan State University.
On Monday night, police said, 43-year-old Anthony Dwayne McRae , of Lansing, Mich., fired shots in two Michigan State buildings, killing three students and injuring five more.
He died of a self-inflicted gunshot wound a few hours later, after being confronted by police off campus.
Mr. McRae had no known ties to the university, police said.