Mario Hess, aka Big Glo, was shot multiple times in West Englewood Wednesday night.
Marquise Harris, 16, was shot and killed Saturday, police and family said.
City Treasurer Stephanie Neely playfully chided Chief Keef to promote a financial-empowerment program.
Keith Cozart was transported to Cook County Jail Wednesday afternoon.
Chicago Police Supt. Garry McCarthy also said murders were down 20 percent this year.
The controversial South Side rapper was locked up last week for failing a test linked to a speeding bust.
The South Side rapper spent time in juvenile jail this year, but now he's in the adult jail's hospital.
The South Side native, in town for an art exhibit, talked rap murders, drill music and social media.
MARK KONKOL: As the teen gangster rapper enters adulthood, he'll gain control of his record deal cash.
Arrested in Englewood, the rapper allegedly told police, "so what?" when arrested with $24 of weed.
Lil Reese, whose real name is Tavares Taylor, was accused of giving false papers to get a BMW.
The Englewood rapper was arrested while leaving a courthouse after pleading guilty to a speeding charge.
The Chicago rapper, part of the Chief Keef crew, is facing gun charges for the second time.
The 20-year-old rapper, a friend of teen rapper Chief Keef, was arrested early Wednesday.
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