Daniel Solis, the once-prominent Chicago alderman whose turn as an FBI mole took down the state’s two longest-serving Democratic power brokers, walked out of a federal courtroom on Tuesday with his gaze fixed on the floor.

Former Chicago Ald. Daniel Solis was asked on a federal witness stand Monday about prostitutes and pot smoking during a Puerto Rican excursion with other elected officials, using campaign funds to make purchases at high-end department stores and pay for his son’s school tuition,

Danny Solis represented Chicago’s 25th Ward on the City Council for more than 20 years. But in June 2016, FBI agents approached him about his own alleged wrongdoing. He agreed to wear a wire, and the evidence he gathered helped the feds indict Michael Madigan,