Some Torontonians were able to spot smoke in the sky on Monday afternoon after a downtown building became engulfed in flames. It was reported that firefighters were battling a two-alarm Toronto fire in an abandoned building located in the downtown area. It is still unclear how the fire started.\nAccording to CBC, fire crews were called to Front Street West and Spadina Avenue shortly after 11:30 a.m. after receiving reports of smoke billowing out of a "boarded-up building."\nToronto Police reported on Twitter that a small explosion was heard coming from the building.\nEmergency services blocked all roads in the area as a precaution as they battled the flames. It is uncertain at the moment how the fire started and how long it will take to be extinguished.\nWhile Toronto Police have yet to confirm if the fire is extinguished, some Torontonians in the area are claiming that the smoke has diminished and the fire appears to be out.\nToronto Fire, Capt. David Eckerman told CBC that they had received numerous unconfirmed reports of a person working inside the building.\niHeartRadio stated that Toronto Fire Services has yet to conduct a full search of the building and are still unable to confirm if anyone was inside when it caught on fire.\nFootage of the fire has begun popping up on social media. In the videos, a large cloud of grey smoke and can be seen billowing from the building as the flames appear to engulf the top of the building.\nNone of the clips seem to have caught the sound of the explosions. However, fire sirens can be heard arriving on the scene.\n#Fire on Wellington street downtown #Toronto #historical pic.twitter.com/YO1el9n18G— Sally Matteo (@MatteoSally) March 23, 2020\nBack in November, emergency services in Toronto responded to a massive North York apartment fire.\nA body was found on a badly-burned balcony of the building. The flames swept through at least three floors, and as many as 700 people were left displaced as a result.\nOver 100 firefighters and 24 firetrucks were at the scene, only managing to control the flames at around midnight.