Santos Vasquez-Ramirez, 27, was arrested at his Pawling, New York, home on Saturday in connection to the Dec. 1 murder of Aurelio Zhunio-Orbez, according to authorities....

An alert sent by Brown University told students to lock doors, silence phones and stay hidden until further notice....

The Ivy League school sent out an active shooter alert shortly before 4:30 p.m. Eastern time on Saturday....