SOUTH BEND, Ind. (CBS) — Have you ever left your car running to warm up while you stay inside? For many of us, the answer to that is yes. But that can be asking for thieves to steal your car.

South Bend police are warning residents not to warm up their cars unattended after a rash of thefts.

South Bend police said they had eight reports of stolen cars on Thursday morning. WBBM’s Mike Krauser reports.

“It’s pretty odd,” said South Bend Capt. Scott Hanley. “A lot of them came within a pretty short period of time.”

South Bend Capt. Scott Hanley told CBS affiliate, WSBT, that they see this from time to time in cold weather months, but not eight times in one morning.

“If you are going to warm your car up, even if its sitting in your driveway right next to your front door, right next to your house, there is still an opportunity for someone to take that car,” Hanley said. “You’ll probably get it back, but you don’t know what condition it will be in when you get it back.”

Police recovered two of the cars and made two arrests. Five cars are still missing.