Two catalytic converters were stolen from two cars in the parking lot at 1020 Post Road on April 17, according to Darien police.

The owner of a 2001 Jeep Cherokee realized his car was making a strange noise when he started to drive it at 4 p.m. After a tow truck arrived, the operator noticed the converter was missing from the underbelly of the car, police said.

Catalytic converters contain rare metals.

Police also learned that another car in the lot was vandalized and its catalytic converter was also stolen, though the owner didn't want to report it.