[The latest: Officer Daniel Pantaleo was fired.]

When internal affairs investigators asked Officer Daniel Pantaleo in 2014 to define a chokehold, he described a scenario where “you use your forearm, grasped with the other hand, and you pull back with your forearm onto the windpipe preventing him from breathing.”

The investigators with the New York Police Department then had him watch video that showed him standing behind Eric Garner during a botched arrest five months earlier on Staten Island. In the video, Officer Pantaleo had his left forearm wrapped around Mr. Garner’s neck, hands clasped. Still, he denied having used the prohibited maneuver .

“No, I did not,” Officer Pantaleo said.

An administrative judge, in a 46-page opinion obtained by The New York Times, found this explanation “implausible and self-serving.”

The judge, Rosemarie Maldonado, who has recommended that Officer Pantaleo be fired, concluded that he had been “untruthful” during the interview, according to the opinion that grew out of a departmental trial that ended in June.