A purported street-gang leader from suburban Chicago who became radicalized in prison faces federal charges accusing him of seeking to provide money to Islamic State militants in Syria, according to a complaint unsealed Friday in U.S. District Court in Chicago. Jason Brown, the 37-year-old leader of the AHK gang, could be heard on secret FBI recordings speaking admiringly about beheadings by the Islamic State group, the 27-page complaint says. AHK, which prosecutors say traffics drugs throughout the Chicago area, is comprised of former members of the Black P-Stone, Gangster Disciples and Four Corner Hustlers who converted to Islam, the court filings say.