Charlotte, May 2 (RHC)-- In the U.S. state of North Carolina, two people were killed and four wounded Tuesday when a man with a pistol opened fire at the University of North Carolina at Charlotte on the last day of classes.

The shooting sparked widespread panic across the campus, with students and staff huddling in offices while police locked down buildings for hours. Exams were canceled through Sunday.

Police later arrested 22-year-old student Trystan Andrew Terrell, saying the suspect was “not somebody on our radar.”   There was no apparent motive for the shooting. According to the Gun Violence Archive, there have been over 100 mass shootings in the U.S. so far this year.