A New York Institute of Technology professor was charged Wednesday after Old Westbury Village police said he placed a camera disguised as a pen in a campus bathroom.

Police were called to the school’s Old Westbury campus about 12:50 p.m. after a person reported finding a pen camera with recording capabilities in a handicapped-accessible bathroom on the third floor of the Kenneth Riland Building.

After a short investigation, police said, they arrested Jackie L. Conrad, 39, of New York City. Conrad was employed as a professor in the anatomy department.

Police charged Conrad with second-degree unlawful surveillance. He was held overnight at a Nassau County police detention facility and arraigned Thursday at First District Court in Hempstead.

Conrad was held on bail of $5,000 cash or bond, according to court records. He is due back in court on July 28.

“This allegation came out of left field for a man with an exemplary personal and professional relationship,” said Kevin Keating, a Garden City attorney representing Conrad. “We will work hard to get to the bottom of this.”

As of Thursday, Conrad is no longer a school employee, NYIT spokeswoman Libby Sullivan said in a statement.

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Sullivan declined to comment on the case but said the school was cooperating with police. Campus security inspected all buildings and bathrooms and didn’t find any additional devices, she said.

“As always, we are committed to ensuring the safety and security of all students, faculty, and staff,” she said.

Old Westbury police detectives believe the pen had been in the bathroom Wednesday from about 9 a.m. to noon and are asking anyone who may have used the bathroom during that time to call Det. Edward Kehoe at 516-626-0200.