Police in Bow, N.H., are warning businesses to be on the lookout for thieves who are targeting company vehicles in the Route 3A area.

For several months, the thief or thieves have been swiping catalytic converters from vehicles left at businesses in the area.

The devices are valuable as scrap metal because they contain platinum and can sell for several hundred dollars, investigators said.

Police are asking business to take precautions and let them know if they see any suspicious behavior.