CHICAGO (CBS) — A man was found stabbed early Saturday morning on a Blue Line platform downtown.

At 2:28 a.m., a 35-year-old man got off a Chicago Transit Authority Blue Line train and requested water from someone waiting on the platform. Police said the incident happened in the 200 block of South Dearborn Street, corresponding to the Monroe Street stop and beneath Federal Plaza.

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The witness noticed that the victim had been stabbed several times in the left arm and dialed 911. Police did not specify if they knew where the victim was stabbed.

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The victim’s condition was stabilized at Northwestern Memorial Hospital.

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There was no one in custody Saturday evening. Area Three detectives were investigating.

CBS 2 Chicago Staff