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MARINE PARK, Brooklyn — A police officer died Tuesday after he collapsed while on the job, law enforcement sources told PIX11 News.

Officer Juan Feliciano, 44, collapsed at Floyd Bennett Field in Brooklyn where he was transporting bikes to a drive training facility, sources said. He was rushed, unresponsive, to a hospital where he was pronounced dead.

Feliciano was assigned to the department’s 28th Precinct in Harlem.

A cause of death has not been determined. Further details were not immediately available.