City and state police and FBI Boston are investigating after a video that appears to show a person holding a gun near the University of Massachusetts campus in Lowell was shared on social media app Yik Yak Wednesday afternoon.

The video appears to show a man holding a gun, walking down a sidewalk.

The university asked students and staff to shelter in place.

Students and staff at the University of Massachusetts Lowell were asked to shelter in place. (Google Maps)

The Lowell Police Department said there is increased police activity in the area of Middlesex Street, Pawtucket Street and Broadway Street. 

Rep. Lori Trahan, D-Mass., said she is actively monitoring the situation and remains in touch with local officials.

“If you are in Lowell, please follow directions from @LowellPD and @UMassLowell,” Trahan wrote in an X post.

University of Massachusetts Lowell is a public research university roughly 40 miles north of Boston.

The Lowell Police Department did not immediately respond to inquiries from Fox News Digital. 

FBI Boston declined further comment on the investigation.