Firefighters rushed to the site of an explosion inside a Midtown parking garage Thursday evening.

The explosion occurred around 9 p.m. on 53rd Street between Third and Lexington avenues.

Two individuals were injured. One person is in critical condition while a second person is in stable condition, NY1 was told by fire officials.

The FDNY says the explosion happened above a door with a duck cover, where a back puff of a generator led to the explosion.

The explosion sent the duck cover 30 feet across the street where pedestrians were walking by, according to officials.

The FDNY says it’s a possible diesel emergency generator explosion.

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