"Fire and heavy smoke were seen Tuesday at a high-rise building in Midtown Manhattan before the start of the St. Patrick’s Day parade, prompting a large emergency response near one of the city’s busiest corridors. The footage shows heavy black smoke rising at the scene, one block from the parade route along Fifth Avenue, causing traffic congestion and some transit delays in the surrounding area. The blaze broke out at approximately 9:45 am at 6 East 43rd Street, in the building's HVAC cooling tower, which was undergoing renovation. The Fire Department of New York (FDNY) deployed an “all-hands” response, with about 140 fire and emergency medical personnel dispatched to the scene. Firefighters contained the flames and the building was fully evacuated as a precaution. The cause of the blaze is under investigation."