Chicago police said the suspect shot and wounded another man hours before his arrest.
A 15-year-old boy and an 18-year-old man were shot Saturday during a fight on a CTA bus, Chicago police said.
Police said the ages of the victims in this weekend's shootings range from 15 to 70.
A verbal altercation on a CTA bus turned physical, injuring two teens on Saturday in Humboldt Park, according to police.
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