Originally published Monday, June 10, 2019 at 07:29p.m.

NEW YORK – A helicopter crashed on the roof of a rain-shrouded midtown Manhattan skyscraper Monday, killing the pilot and briefly triggering memories of 9/11, though it appeared to be an accident.

The crash near Times Square and Trump Tower shook the 750-foot AXA Equitable building, sparked a fire and forced office workers to flee on elevators and down stairs, witnesses and officials said.

The pilot was believed to be the only one aboard, and there were no other reports of injuries, authorities said.

It was not immediately clear what caused the crash, or why the Agusta A109E was flying in a driving downpour with low cloud cover and in the tightly controlled airspace of midtown Manhattan. A flight restriction in effect since President Donald Trump took office bans aircraft from flying below 3,000 feet within a 1-mile radius of Trump Tower, which is less than a half-mile from the crash site.