CHICAGO — Chicago police have confirmed a shooting involving an off-duty officer on the city’s Northwest Side.

The shooting happened near an Amoco gas station around 8 a.m. Wednesday at Grand and Laramie.

According to Chicago Police Department spokesman Tom Ahern, the officer was not injured but was transported to an area hospital for observation. The officer was later released.

It’s unknown at this time if anyone was injured.

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Police have not released specific details about what led to the shooting, but they did say at least two vehicles were involved, including a Silver Hyundai found less than a mile away in the 6100 block of West Fullerton Avenue.

People who spoke with WGN near the gas station and where the vehicle was towed said they didn’t see or hear anything. Cameras at the gas station reportedly didn’t catch what happened either.

The off-duty officer who was involved in the shooting has been placed on routine administrative duties for at least 30 days, according to a statement from the Chicago Police Department.

The incident is under investigation by the Civilian Office of Police Accountability. Anyone with information is asked to visit their website.

Anyone with information can also call COPA at 312-746-3609.