Police say Turner was found dead in an alley in March 2017.
READ MORE | Judge OK's bond for man accused of concealing body in alley
Nearly three years after the murder, CPD officials said DNA evidence led to Arthur Hilliard's arrest.
SEE ALSO | New DNA details in Diamond Turner investigation timeline
Cook County prosecutors also linked him to the stabbing murder of another person in 2019.
RELATED | Man charged in 2017 murder of Diamond Turner accused in stabbing death of 2 others: police
A jury found Hilliard guilty of all three counts he was charged with, including murder and concealing a homicide, in connection with Turner's killing on Friday.
Hilliard will be back in court later this month for post-trial motions.
READ MORE | Justice for Diamond Turner
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