According to Baltimore County Emergency Services, medic units were called to the SECU Arena at Towson University for an “inhalation patient” on Saturday after 9 p.m.
According to the report, there was a fight at the location and possible guns were involved.
The report also stated that someone was “sprayed” at the scene and needed treatment.
The Dundalk High School graduation was taking place at the SECU Arena during the incident.
It was unclear if the incident took place inside or outside of the arena.