The NYPD says 37-year-old Jose Lopez walked out of the building while in a hospital gown just before noon.
He had been in a room on the sixth floor.
Lopez was in custody after a hit-and-run with a moped. He was facing charges of criminal possession of a controlled substance, leaving the scene of an accident and reckless driving.
He is described as approximately 5 feet, 11 inches and 170 pounds.
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