NEW YORK — A Mexican navy sailing ship on a global goodwill tour struck the Brooklyn Bridge in New York on Saturday, snapping its three masts, killing two crew members and leaving some sailors dangling from harnesses high in the air waiting for help.

New York Mayor Eric Adams said the 142-year-old bridge was spared major damage but at least 19 people aboard the ship needed medical treatment.

Two of the four people who suffered serious injuries later died, Adams said on social media on Sunday.

The cause of the collision was under investigation.

In a scene captured in multiple eyewitness videos, the ship, called the Cuauhtemoc, could be seen traveling swiftly in reverse toward the bridge near the Brooklyn side of the East River. Then, its three masts struck the bridge's span and snapped, one by one, as the ship kept moving.

Videos showed heavy traffic on the span at the time of the 8:20 pm collision. No one on the bridge was reported injured.

The vessel, which was flying a giant Mexican flag and had 277 people aboard, then drifted into a pier on the riverbank as onlookers scrambled away.

Sailors could be seen aloft in the rigging on the damaged masts but, remarkably, no one fell into the water, officials said.

Sydney Neidell and Lily Katz told The Associated Press they were sitting outside to watch the sunset when they saw the vessel strike the bridge.

"We saw someone dangling, and I couldn't tell if it was just blurry or my eyes, and we were able to zoom in on our phone and there was someone dangling from the harness from the top for at least 15 minutes before they were able to rescue them," Katz said.

Just before the collision, Nick Corso, 23, took his phone out to capture the backdrop of the ship and the bridge against the sunset. Instead, he heard what sounded like the loud snapping of a "big twig". Several more snaps followed.

People in his vicinity began running and "pandemonium" erupted aboard the ship, he said. He later saw a handful of people dangling from a mast.

"I didn't know what to think. I was like, is this a movie?" he said.

The Mexican navy said in a post on X that the Cuauhtemoc was an academy training vessel. It said a total of 22 people were injured, 19 of whom needed medical treatment.

Mexican President Claudia Sheinbaum wrote on X that she was "deeply saddened" by the two crew members' deaths.

The Brooklyn Bridge, which opened in 1883, has a nearly 490-meter main span supported by two masonry towers. More than 100,000 vehicles and an estimated 32,000 pedestrians cross every day, according to the city's transportation department.

Traffic was halted after the collision but was allowed to resume after an inspection, city officials said.

It was unclear what caused the ship to veer off course. Wilson Aramboles, New York police chief of special operations, said the ship had just left a Manhattan pier and was supposed to have been headed out to sea, not toward the bridge.

He said an initial report was that the pilot of the ship had lost power because of a mechanical problem, though officials cautioned that information was preliminary. Videos show a tugboat was close to the Cuauhtemoc at the time of the crash.

Agencies Via Xinhua