Police say passengers had been complaining about cell phone service on the train for months (Nicholl takes the Red Line to work everyday). Witnesses had shared photos of Nicholl and his device, a black box with five antennae, months prior to his arrest on Tuesday. Nicholl was aware that the gizmo was illegal. According to the Chicago Tribune, cops started working off a tip they received months ago, as well as a submitted photo of Nicholl holding the black electronic jammer started working with the Chicago Transit Authority and the Federal Communications Commission (FCC). After setting up plainclothes surveillance on the train, an undercover officer on Tuesday recognized Nicholl from his photo and sat near him. The cop used a personal cell phone to try to make a call, and it was immediately dropped. That’s when Nicholl was arrested. Nicholl’s lawyer Charles Lauer told the Chicago Tribune that he was simply looking for peace and quiet on his train commute from his North Side home to the University of Illinois Hospital & Health Sciences System, where officials confirmed he works as a financial analyst. “He’s disturbed by people talking around him,” he said. “He might have been selfish in thinking about himself, but he didn’t have any malicious intent.” This is not the fist time Nicholl he has performed this stunt. He had pulled a similar stunt back in 2009, but was only charged for a misdemeanor at that time, and that jammer was confiscated and destroyed.