Waukesha police said one of the suspects has been arrested after nine cars were stolen.
Police responded Sunday morning to the Jaguar/Land Rover car dealership after receiving information from a maintenance worker that there was damage to a garage door.
After an investigation, police discovered eight vehicles belonging to the dealership and belonging to a customer were stolen.
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Another law enforcement agency had engaged the nine vehicles as they fled the scene, Waukesha police said.
Police said a group of teenagers from the Chicago area were responsible for the heist and a 17-year-old from Chicago has been charged. Two of the vehicles have been recovered.