Larry Luellen Jr., 34, was charged with first-degree murder in the Feb. 15 slaying of Frances Colon, 18.
Following the third Clemente student killed in three months, top cop addressed illegal gun use.
Frances Colon, killed Friday, is the third Roberto Clemente High School student killed in three months.
Honors student Frances Colon was the third Clemente High School student slain in the last three months.
Frances Colon, 18, was killed near a gang-infested playlot in West Humboldt Park, neighbors said.
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