Toronto Fire District Chief Stephen Powell told CNN that the counterweight, part of the crane, meant to prevent it from tipping over, was located on top of the Esplanade residential building after falling about 20 feet.
He said authorities were informed about the incident at the intersection of The Esplanade and Yonge Street just after 2 p.m.
According to Powell, the condominium’s top six floors are mechanical rooms used for building maintenance, so no dwelling units were damaged.
Powell said the city’s structural engineers were assessing the damage caused by the crane, adding that no one was reported injured.
CNN has contacted Dell Property Management, which owns 8 The Esplanade, for comment.