Images from the scene of today’s helicopter crash at 787 7th Ave in Manhattan. Photo: Twitter

One person died in the crash of the Agusta A109E helicopter, according to officials. That victim is presumed to be the pilot, according to New York City Mayor Bill de Blasio, who also said there were no other known injuries.

“Thank God for that,” de Blasio said. “This could have been a much worse incident.”

Only the pilot was aboard the aircraft when it crashed just before 1:43 p.m. on top of 787 Seventh Ave., a 51-story building located between West 51st and West 52nd streets, at the north end of Times Square.

A senior law enforcement official told NBC News that the pilot had dropped a passenger off at the West 34th Street helipad when he then took off and eventually flew onto the roof of the building.

The building’s roof does not have a helipad. Workers at the building quickly evacuated after the crash, which occurred on a rainy, foggy day. The fire on the roof was soon extinguished by firefighters, who took elevators to the roof and had water pumped up more than 700 feet.