Montreal police have opened an investigation into a suspected arson that struck a commercial building in the city’s north‑end on Thursday, marking the third such incident at the same site in less than three weeks. The latest fire was reported at approximately 17:11 GMT on 17 September, prompting officers to secure the area and begin a forensic inquiry.

The building, which houses a variety of businesses, has now been the focus of three alleged arson attacks within a short three‑week period. Police have not released details about the extent of damage from the most recent blaze, but they confirmed that the incident appears to be intentional rather than accidental. The pattern of repeated attacks has led authorities to treat the case as a coordinated series of criminal acts.

Detectives from the Montreal Police Service are gathering evidence, reviewing surveillance footage, and interviewing witnesses to determine whether a single perpetrator or multiple actors are responsible. Investigators emphasized that any information about suspicious activity near the building in recent weeks could prove valuable to the ongoing probe.

The repeated targeting of the commercial property has raised concerns among local business owners and residents, who are urged to remain vigilant. While the police have not identified any suspects, they are collaborating with fire officials to assess the cause of each fire and to prevent further incidents. The department reiterated its commitment to protecting commercial districts and ensuring public safety throughout the city.

Authorities have not announced a timeline for arrests or charges, but the investigation remains active as officials continue to piece together the circumstances surrounding the three suspected arsons. The police department will provide updates as new information becomes available.