STAMFORD — A traffic stop led to the discovery of heroin and counterfeit bills last week in the South End, police said.

Officers in the Narcotics and Organized Crime squad spotted a Black Chrysler 300 heading eastbound on Lipton Street turn onto Atlantic Street without signaling about 4 p.m. Wednesday. As officers tried to pull over the vehicle, the driver did not immediately stop and was seen leaning down near the front of his seat, Capt. Richard Conklin said.

Officers detected a smell of marijuana in the vehicle and found 15 bags of heroin each marked “Flawless” with a green skull, Conklin said. They also found two counterfeit $100 bills, Conklin said.

The driver, Darnell Malpelli, 35, of Port Chester, N.Y., was charged with possession of narcotics with intent to sell, two counts of first-degree forgery and making an improper turn. He was held in lieu of a $10,000 court appearance bond.;