Toronto police are looking for one man in connection a series of fires set in Old City Hall on Monday night.
Fire crews and police were called just after 8 p.m. to the one-alarm fire at Old City Hall.
Police say three separate fires were deliberately set within an office, causing an estimated $100,000 in damage.
Division Chief Larry Cocco says a mitigation strategy is underway by the Ministry of the Attorney General, who was the leaseholder of the office where the fires were set.
Sprinklers helped to contain the blaze and it was knocked down quickly.
No injuries were reported.
Police have released a security image of the suspect. They ask anyone who might know or recognize the suspect to contact police or Crime Stoppers.