Murder suspect Erik Crespo, 17 years old at the time of a 2005 New Year’s Eve elevator shooting in New York City, was questioned by Detective Christopher Perino. But the detective later denied that any questioning had taken place, only to discover Crespo had used his MP3 player to record the interrogation, AP reports. The recording, which displayed questionable tactics on Perino’s part, was enough to arraign the detective on 12 counts of first-degree perjury yesterday, and he faces up to seven years for each count.

Crespo, who faced 25 years if convicted, was offered a deal by prosecutors to serve 7 years if he pleaded guilty to a weapons charge. According to AP, he accepted the bargain.