CHICAGO - A Chicago man was arrested this week, a month after police say he fatally shot one woman and seriously injured another in an early morning attack on the city’s Northwest Side.

What we know:

Carlos Marrero, 26, was taken into custody Tuesday in the 5000 block of North Winchester Ave., according to Chicago police.

Investigators identified him as one of the suspects in the Sept. 13 shooting in the 3400 block of West Wabansia Ave.

The backstory:

Around 2:34 a.m. that day, officers responded to reports of a person shot and found a 26-year-old woman unresponsive on the ground with a gunshot wound to the head. She was taken to Mount Sinai Hospital, where she died about an hour later. The Cook County medical examiner did not share her identity.

A 36-year-old woman was also shot a

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