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CHICAGO — Police are seeking the public’s help after a 15-year-old boy was shot in West Englewood Sunday afternoon and later died.

Just before 4:15 p.m., authorities were dispatched to the 5600 block of South Marshfield on the report of a shooting.

Police said a 15-year-old boy was shot and killed after three suspects exited a SUV. A gunman fired at the boy, later identified as Marlin Gaines, multiple times, police said.

Chicago fire transported Gaines to Comer Children’s Hospital where he later died.

Grandfather Lawrence Johnson said he doesn’t know why his grandson may have been targeted.

“I’m almost certain it’s going to be something petty,” Johnson said. “You know, three boys whooped him and shot him seven times… he didn’t deserve that.”

Johnson said Gains went to Harper High School.

“He had a big heart,” Johnson said. “Beautiful person.”

Police are asking for tips at