CHICAGO (CBS) — A suspect is in custody after someone shot a Chicago police officer with a paintball gun Thursday night in the Englewood neighborhood, prompting a chase that ended in south suburban Calumet Park.

Police said a plainclothes officer was standing on the sidewalk, conducting an investigation near 59th and Loomis shortly before 11:30 p.m., when someone in a black van fired a paintball gun, hitting him in the left side.

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The officer was not injured, and officers who responded to the incident chased the van to 113th and Vernon in Calumet Park.

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Three males got out of the van and ran off. Police caught one of the suspects, but the other two got away.

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Area South detectives were investigating.