BOSTON -- In a move to stem the rising tide of GPS thefts from cars around the city, Lawrence, Mass., police are outfitting "bait cars" with a fake satellite positioning system, and then waiting for thieves to show up.

The tactic has already netted them one arrest and they expect more to follow as the devices have become an increasingly popular item among thieves, police said.

They said the GPS systems, which use satellite information to produce digital maps for motorists, are expensive and officers have seen thefts spike in the past six months, according to the Lawrence Eagle Tribune.

On May 5, officers put a fake GPS unit inside a bait car and added a cell phone to sweeten the deal, then left the car parked -- with windows open and doors unlocked -- in an area where thefts have been on the rise.

Within about 15 minutes, they said, a man was getting into the car attempting to make off with the goods.

Police arrested and charged Carlos Cruz, 22, of 267 Park St., with breaking and entering a vehicle.

Officers said many of the GPS devices have been taken from commercial vehicles as well as ambulances and utility trucks, so they might use one of those as bait as well.