A fire ignited in an apartment unit of a downtown Toronto high‑rise at approximately 03:11 on Thursday, leaving four people injured, two of whom are children. The blaze erupted at the intersection of Ontario Street and St. James Avenue, prompting an immediate response from Toronto Police Service and emergency crews.

Police and fire personnel arrived on the scene within minutes of the alarm. Crews worked to suppress the flames and secure the building while ensuring the safety of residents in the surrounding units. The incident unfolded in the early morning hours, a time when many occupants were likely still in their homes, increasing the urgency of the response.

Officials confirmed that four individuals sustained injuries as a result of the fire. Among those affected, two are children, though details regarding the severity of their injuries have not been released. The injured parties were attended to by emergency medical responders on site.

The fire was contained after a coordinated effort by the fire department, and the affected apartment unit was evacuated. No further injuries were reported, and the building remained structurally sound following the incident. Toronto Police Service is conducting an investigation to determine the cause of the fire, while emergency crews continue to monitor the situation for any residual hazards.

Residents in the vicinity were advised to remain clear of the area while investigators and safety officials performed their duties. The incident underscores the rapid mobilization of city emergency services when a high‑rise fire occurs in a densely populated part of Toronto.

Authorities have not released a timeline for when the building will be fully re‑occupied, but they are working to ensure that all safety protocols are met before residents can return to their homes.