CPD said officers responded about 3:55 a.m. to the 2300-block of North Sacramento Avenue for a report of a person stabbed. When police arrived, the man was "very uncooperative with police," CPD said.
He had been stabbed in the neck and chest.
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Chicago fire crews took him to Illinois Masonic hospital in critical condition.
No one is in custody, and Area Five detectives are investigating.
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