CHICAGO (CBS) — A man was in serious condition late Thursday following a drive-by shooting in Morgan Park.

The shooting happened around 10:45 a.m. in the 11500 block of South Vincennes Avenue, police said.

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A 46-year-old man told police he was driving northeast on Vincennes when a black sport-utility vehicle began following closely behind him.

The SUV pulled up next to him and someone inside fired shots, police said.

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The first driver continued to fire shots at the victim’s vehicle and then fled north, police said.

The victim suffered a gunshot wound to the upper back and was taken to Advocate Christ Medical Center in Oak Lawn, police said.

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No one was in custody Thursday night. Area Central detectives were investigating.