Toronto Fire Services responded to reports of a natural gas fire at a North York condominium building on Tuesday morning, prompting evacuations and sending several people for medical assessment.Emergency crews were called to 68 Esther Shiner Boulevard, near Leslie Street and Sheppard Avenue East, at approximately 9:18 a.m. after reports of a possible explosion in a penthouse unit on the 22nd floor.When firefighters arrived, there were no visible flames, but the building was partially evacuated as a precaution. Gas service to the building was shut off while crews worked to secure the scene.Toronto Fire said up to six patients were assessed at the scene, though the extent of their injuries has not been confirmed.Early indications suggest that contract work may have been taking place in or around the building at the time of the incident, though it is not yet clear whether that activity contributed to the event.More to come