Detectives seized thousands of stolen automobile catalytic converters early Thursday following a six-month investigation.

The Catalytic Converter Task Force served five search warrants starting at 4:30 a.m. in the San Fernando Valley and across Los Angeles County, according to Los Angeles Police Department Capt. Robert Marino, of the Devonshire Division.

• Video: Detectives crack down on theft ring

The thieves targeted catalytic converters because they contain precious metals such as platinum, Marino said.

During the investigation, detectives identified crews working in the San Fernando Valley, Santa Clarita, Burbank and Simi Valley.

Los Angeles City Councilman Mitch Englander said the crime is not victimless because removing the device leaves the car inoperable.

“They can’t go to and from work or pick up their children from school. It creates havoc and wreaks havoc on people’s lives to learn their car has been tampered with,” Englander said.

• Photos: Thousands of stolen catalytic converters recovered

Insurance companies often do not pick up the cost of repairs, which can run up to $2,000, the councilman said.

During the operation, detectives also recovered several guns, Marino said.

Thousands of parts were recovered from an auto parts receiving facility in Pacoima and the others from the home of the suspects, according to Marino.