The fire that destroyed a law office in Stoney Creek last week was deliberately set, Hamilton police say.

"At this stage of the investigation, the cause has been identified as a criminal act of arson," a police news release reads.

"Centennial Law partners and staff have been made aware of the cause and have been co-operating fully with the police investigation."

Firefighters were called to the scene at Centennial Law Group at 19 King Street West at 12:33 a.m. on Jan. 12.

The building was engulfed in flames and suffered heavy damages, with costs estimated at over $500,000.

"Detectives are now seeking the public's assistance to identify a male suspect that was captured on video surveillance footage in the act of setting the structure on fire," the news release reads.