The so-called "Preppie Killer," who served 15 years in prison for strangling a woman in Central Park, was arrested Monday on charges of selling drugs and resisting arrest.

Robert Chambers' arrest stemmed from an undercover operation in which drugs, including cocaine, were purchased from him at his residence in Manhattan's Upper East Side, police said. They said he struggled with officers during his arrest.

It was not immediately clear whether Chambers had an attorney.

Chambers was charged with several counts of criminal sale of controlled substances and resisting arrest.

Chambers was released from prison on Valentine's Day 2003 after serving 15 years for the 1986 strangling of 18-year-old Jennifer Levin during a tryst in Central Park.

The undercover sting began after police received complaints alleging drug sales at Chambers' residence, where he lived with his girlfriend, police spokesman Paul Browne said. Undercover officers were able to buy cocaine from Chambers, he said.

"There was considerable traffic to his door," Browne said. "He was pretty indiscreet about it."

Chambers' girlfriend was also arrested on a charge of criminal sale of a controlled substance.

Police arrested Chambers in 2004 for misdemeanor heroin possession and unlicensed driving. He pleaded guilty and was sentenced to 100 days in jail and ordered to pay a $200 fine.

A message left early Tuesday for the state Division of Parole inquiring about Chambers' status was not immediately returned.