STAMFORD — A Bridgeport man was charged with possession of a small amount of crack and driving a stolen van early Tuesday morning, police said.

Sgt. Michael Franzetti said an officer on patrol at 2 a.m. Tuesday in the South End rolled past what looked to him like a drug transaction between two men at the corner of Woodland Avenue and Pacific Street. He decided to turn around and see what was going on.

When the officer made the turn, one of the men ran away; the other got into a 2003 Chevrolet van and drove away. The officer pulled the van over and asked the driver, John Peterson, 53, if he had a license. Peterson said he did not, Franzetti said.

The officer then asked if he had any drugs, and Peterson admitted to having a little crack cocaine, Franzetti said. A search turned up a small rock of the powerful drug.

When the officer looked up Peterson’s name, he learned there was a rearrest warrant for him for not showing up to court in Bridgeport. Furthermore, when the officer checked the vehicle’s plates, he found out that the van was reported stolen from Bridgeport two days earlier.

Peterson, of Washington Avenue, was charged with second-degree larceny, possession of narcotics and driving without a license. He was held in lieu of a $50,000 court-appearance bond.