Report of armed person prompts sirens at University of North Carolina
Man carrying a gun (Shutterstock)

The University of North Carolina at Chapel Hill activated emergency sirens on Wednesday after police reported an "armed and dangerous" person on or near the campus, according to the school's Twitter account.

"The report is unconfirmed at this time, but the campus is asked to shelter in place," the school said in a subsequent alert to the campus.

(Reporting by Colleen Jenkins; Editing by Chizu Nomiyama)