Gun violence preparedness is a priority on college and university campuses across Long Island a day after a gunman fatally shot three students at Michigan State University.

Adelphi University officials tell News 12 they are increasing patrols and expediting an active shooter training course.

At Stony Brook University, security officers say they will prioritize its multi-faceted approach to stop gun violence, including mental health outreach.

"To be alert, to be mindful of what happens on social media," says Stony Brook University Chief Security Officer Lawrence Zacarese. "Behavior threats that we may get from other agencies, that's something we were certainly elevating prior to this, and we will continue to put resources there."

Hofstra University is set to host a Gun Violence Prevention Summit to discuss the rise in gun violence Wednesday at 7 a.m.