New details emerge about NYPD cop’s ‘purely unintentional’ gun discharge during Columbia raid on anti-Israel protesters inside Hamilton Hall

The NYPD sergeant who accidentally fired his gun during Tuesday night’s operation to oust anti-Israel protesters from Columbia University mistakenly let the slug fly as he shifted the weapon from one hand to another so he could unlock an office door, officials said.

The “experienced” cop — who had served as a sergeant for eight years in the department’s Emergency Service Unit — was holding a 9mm handgun with an attached flashlight as he helped other officers access a locked office on the first floor of the Ivy League university’s Hamilton Hall, ESU Commanding Officer Chief Carlos Valdez told reporters Friday.

His team had already broken a window — allowing the sergeant to reach through the hole in the glass to unlock an office door from the inside, Valdez said.

He realized he needed his dominant right hand to do that, so he switched the gun over to his left, the police official said.

“[That’s] when the unintentional discharge occurred,” Valdez said.

“The bullet traveled to the office glass and into the office they were attempting to gain access to.”

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“After the firearm discharged, the sergeant immediately assessed his team and ensured that nobody was injured,” the chief added.

“The team gained access to the office and found that there was nobody inside. In this case, the bullet landed on the floor of the office and didn’t travel anywhere else. So it was apparent that it had struck no one.”

The sergeant continued his assignment — making sure the building was cleared — and sounded the alarm to his own supervisor “at the first opportunity,” Valdez said.

“At no time were any police officers, members of the public or any protesters in danger,” Valdez said.

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“This was purely unintentional.”

The sergeant involved will be counseled and sent to retraining, he added.

Columbia students and other protesters had already been moved to a different part of the building — the lobby and main entrance area — by the time the sergeant had let off the stray round, according to Carlos Nieves, the NYPD’s assistant commissioner for public information.

A total of 109 people were arrested during Tuesday night’s operation , which also included the final clearing of the encampment on the campus’ lawn — which started a nationwide trend at other elite universities since its mid-April erection.

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The morning after the operation — and a similar takedown at CUNY’s City College — Mayor Eric Adams and NYPD officials briefed the media, but made no mention of the accidental discharge.

“I think we could have talked about it, but I don’t recall it coming up organically at that press conference,” Deputy Commissioner of Public Information Tarik Sheppard said Friday.

“And first off, we normally don’t do any kind of release on an accidental discharge.”

“I knew it would come up eventually, because it always does,” he added.

Douglas Cohen, a spokesperson for Manhattan District Attorney Alvin Bragg’s office, said Thursday night that his office’s Police Accountability Unit is investigating the shooting, as “it is our policy to review such incidents.”

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