Just before 2 p.m. Monday, a helicopter was reported to have crashed on top of an office building at 51st Street and 7th Avenue. The City of New York issued an emergency notification just after the crash was reported and alerted citizens to expect road closures. No other details have been provided. The building where the crash occurred is just outside of Times Square. A witness reported hearing a loud sound and then seeing flames and smoke billowing from the top of the building.