The Baltimore police were called to the Under Armour headquarters Sunday after they received reports of a suspicious person sighted in the store.
Employees were evacuated by the SWAT team, but nothing suspicious was uncovered by 5 p.m.
Police have yet to release further details regarding the incident.
The store, which features sports-related merchandise from the company was founded by a former University of Maryland football player in 1996, and is located in Baltimore’s Inner Harbor.