Update 4:24 pm: According to Public Safety officers on the scene, the smoke was caused by the activation of the building’s heating system, and people became concerned when the smoke drifted down onto the street.

Several tipsters have reported that a large quantity of smoke is being emitted from a building on 115th and Broadway. Fire trucks are on the scene, but firemen reportedly told bystanders that they are investigating the smoke and cannot confirm the existence of a fire. Public Safety has dispatched units but so far knows nothing more than the firemen. As of yet there’s no reason for alarm. So get your heads back in the books!