A federal jury in Chicago convicted R. Kelly on Wednesday of producing child pornography and enticing girls for sex after a monthlong trial in his hometown, delivering another legal blow to the Grammy Award singer who was once one of the world’s biggest R&B stars, according to a report by Associated Press.

According to the report of Associated Press, Defense lawyers at R. Kelly’s child pornography trial in Chicago sought Wednesday to portray a key government witness as a liar and extortionist, contending the man first approached the R&B star in 2001 and demanded that Kelly pay $1 million or he’d go public with video that could put Kelly in serious legal peril.