A teen trying to sell a stolen GPS downtown Thursday picked the wrong customers, police said.

Two off-duty police officers on Sherman Green were allegedly approached about buying a GPS unit, which police said had been stolen a short time earlier by 18-year-old Jeancarlos Serrano from a car parked in front of Bud's Deli on Reef Road.

The officers -- one from Darien, the other from Norwalk -- declined the offer, according to the report, and instead notified Fairfield police.

Serrano, who lives on Yacht Street in Bridgeport, in the meantime had approached a motorist in a blue Volvo. When local officers arrived, the off-duty cops told them that the motorist had given Serrano money.

Police questioned the motorist, who told them he gave Serrano $40 for the GPS units, but turned it over to police saying, "I don't want to get involved."

Serrano was charged with third-degree burglary and sixth-degree larceny. His initial $1,000 bond was later reduced to a promise to appear Aug. 16 in Bridgeport Superior Court.