A 55-year-old man collapsed and died of a stab wound to his neck on a River North Street early Friday. No one is in custody.

Police said the man was apparently stabbed in an alley at 444 North State Street around 2:15 a.m. He then walked to the corner of State and Hubbard, where he collapsed and was later pronounced dead.

About 15 minutes after the man was found lying on the sidewalk, CTA workers at the nearby Grand Red Line station reported a man with a large knife was threatening another passenger on the platform. The man was gone when police arrived. It was not known if that person was connected to the stabbing incident.

Another 911 caller reported seeing a man with a knife at State and Hubbard shortly before the man was stabbed, according to police dispatch. Again, no person was found.

The first block of West Hubbard where the man died is lined with bars, clubs, and restaurants. A trail of blood led from the man’s body to the nearby alley where police said the crime took place.

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