Maryland officials say a 20-year-old man assaulted a friend with a chemical spray at a mall.

Officials said in a statement Wednesday that police and fire personnel were called to Towson Town Center in Baltimore County on Tuesday night for a possible chemical irritant in the mall. Officials say the spray appears to be Mace or pepper spray.

Officials say one man told police that a friend confronted him, then quickly pulled out a small canister and sprayed him. Officials say assault charges are pending against the man.

EMS workers evaluated about a half dozen people affected by the irritant and one pregnant woman was taken to a hospital as a precaution. Officials say others refused medical treatment, including the man who told police that he was sprayed.