The former New York Institute of Technology professor accused of unlawful recording in a campus bathroom was found dead in his Manhattan apartment, the victim of a possible suicide, the NYPD said Friday.

Jackie L. Conrad, 39, was found by his wife on Thursday afternoon when she returned to their residence on Adam Clayton Powell Boulevard, police said.

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Conrad left a note in which he expressed embarrassment over the illegal surveillance allegation, an NYPD spokesman said. An autopsy will determine the cause of death, he said.

A spokeswoman for the city medical examiner said late Friday autopsy results were pending.

Conrad was employed as an anatomy professor when he was arrested July 13 on charges he allegedly put a pen camera with recording capabilities in a handicapped-accessible bathroom on the third floor of the school’s Kenneth Riland Building. The day after the arrest, a campus spokeswoman said Conrad was no longer a school employee.

Defense attorney Kevin Keating of Garden City couldn’t be reached for comment Friday. At the time of Conrad’s arrest, Keating said the allegations “came out of left field” and that “we will work hard to get to the bottom of this.”