REDWOOD CITY — A 24-year-old San Francisco man is among the first to be convicted in connection with a historic sting aimed at curtailing drug- and gun-related crime in San Mateo and San Francisco counties.

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East Bay man carjacks Porsche from Peninsula dealership, police say On Thursday, Bernard DeLeon pleaded no contest to felony auto theft. Prosecutors said DeLeon and an unnamed accomplice sold a stolen Toyota Previa minivan to an undercover agent for $300.

DeLeon is one of the 102 people who were arrested as part of Operation Cold Day. The two-year sting was carried out by the Daly City and San Francisco police departments, the California Highway Patrol, San Mateo and San Francisco county district attorney’s offices, and the Bureau of Alcohol, Tobacco, Firearms and Explosives.

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Earlier this month, when the results of the sting were announced, ATF Special Agent Jill Snyder said it had resulted in the largest number of arrests in the federal agency’s history.

Authorities also recovered more than 90 stolen firearms, nearly 50 stolen vehicles and several pounds of narcotics.

At least 42 people have since been charged with federal gun and drug trafficking crimes, according to the U.S. Attorney’s Office.

San Mateo County prosecutors, meanwhile, have filed 45 felony cases against 48 people, with charges ranging from possession of stolen property to illegal possession of firearms.

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DeLeon, who remains in custody in lieu of $50,000 bail, is scheduled to return to court Sept. 28 for sentencing.