Car2Go is now rounding up more than 100 of its luxury cars in Chicago after the vehicles were stolen earlier this week. So far, 16 people have been brought in for questioning, in connection to the scheme that left dozens of Mercedes-Benz vehicles scattered around the city, according to The Verge. 

Car2Go locked down a partnership in late February with Daimler AG and BMW Group to bring SHARE NOW to Chicago. SHARE NOW ride-sharing service provides 20,000 BMW, Mercedes-Benz, smart, and MINI vehicles available in 30 cities across Europe and North America.

Original reports said thieves were able to get away with the vehicles because of a hack; however, Car2Go claims it was due to fraud. Car2Go also said in a tweet that no customers’ personal information had been compromised.

“We were not hacked,” Car2Go said in a tweet. “This is an instance of fraud, isolated to Chicago, and we are currently working with law enforcement.”

The company is working with Chicago law enforcement to recover its cars in an “ongoing” investigation.

“We are working with the company to determine whether there are any other vehicles whose locations cannot be accounted for. At this time, the recoveries appear to be isolated to the West Side. The investigation is ongoing,” a police spokesperson said in a statement to The Verge.

Police said there is no confirmed count on total arrests or stolen vehicles. For now, the service is unavailable in the city.