A fire broke out in a cooling unit on the roof of Trump Tower in midtown Monday morning, injuring a firefighter and an engineer, the FDNY said.

A call came in just before 7 a.m. for a blaze at 721 Fifth Ave., between 56th and 57th streets, a spokesman said. The skyscraper is where President Donald Trump lived before moving to the White House last year.

One firefighter sustained a minor injury when a piece of debris fell on him, Asst. Chief Roger Sakowich said at the scene. An engineer who went up to the roof with a fire extinguisher also had a minor injury, but he refused medical treatment, Sakowich said.

The fire was placed under control at about 8:15 a.m., the department said.

There was no smoke condition or fire inside the building, Sakowich said.

The cause of the blaze is being investigated by fire marshals.

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