The incident happened at GMU’s Arlington campus, near Virginia Square, around 3:00 p.m. Police say the man entered the classroom and attempted to place the professor under a citizen’s arrest. The professor tried to get the man — described as a white male in his 20s or 30s — to leave, at which time the man pepper sprayed him and a scuffle ensued, according to Arlington County Police spokesman Dustin Sternbeck.
The professor did not know the man, Sternbeck said.