The escalator buckled as the men were on it inside the Greenwich Street transit hub, officials said. View Full Caption DNAinfo/Trevor Kapp

FINANCIAL DISTRICT — Two men were injured when a World Trade Center Oculus escalator they were riding malfunctioned Thursday morning, officials said.

The men were on the escalator when it abruptly buckled about 7 a.m., according to a Port Authority spokesman.

They were able to walk out to a waiting ambulance which brought them to New York-Presbyterian Lower Manhattan Hospital for evaluation, officials said.

Commuters who need to use the escalator, which is just below street level near the Greenwich Street entrance, can use another one nearby to reach the lower levels, officials said.

Port Authority police and World Trade Center staff are investigating the incident, officials said.

The Tuesday morning incident came about two months after a woman fell to her death on an escalator in the transit hub while reaching over the rail for her fallen hat.