New York City ? A teenage suspect who secretly recorded his interrogation on an MP3 player has landed a veteran detective in the middle of perjury charges, authorities said Thursday.

Unaware of the recording, Detective Christopher Perino testified in April that the suspect “wasn’t questioned” about a shooting in the Bronx, a criminal complaint said. But then the defense confronted the detective with a transcript it said proved he had spent more than an hour unsuccessfully trying to persuade Erik Crespo to confess – at times with vulgar tactics.

Once the transcript was revealed in court, prosecutors asked for a recess, defense attorney Mark DeMarco said. The detective was pulled from the witness stand and advised to get a lawyer.

Perino, 42, was arraigned Thursday on 12 counts of first-degree perjury and faces as many as seven years on each count, prosecutors said. He was released on $15,000 bail.