Jaylen Saulsberry was sentenced to 65 years on Thursday.
He and his co-defendants were convicted after being seen on surveillance video, which captured the 2020 shooting that killed CFD Lieutenant Dwain Williams.
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It started as an attempted carjacking of the lieutenant, who was leaving a shop in Morgan Park.
Devin Barron was sentenced to 60 years and Dwain Johnson was sentenced 30 years as part of plea deal in exchange for his testimony.
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