The attorney for a Binghamton resident charged in the fatal stabbing of a Central Islip man more than six years ago said Monday his client didn’t know the victim and had nothing to do with his death.

“He categorically denied doing this,” said Richard Stafford, the attorney for Christopher James, 23, of Murray Street in Binghamton.

Suffolk police arrested James Sunday in connection with the February 2010 killing of Kevin Pierson, 38.

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James pleaded not guilty Monday to second-degree murder in the stabbing death of Pierson in the victim’s Central Islip apartment.

He was ordered held without bail at his arraignment Monday in First District Court in Central Islip.

His next court date is April 29.

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Suffolk police have not released any details about what led them to arrest James or the nature of his relationship with Pierson.

Police officers responding to a call from Pierson’s cousin on Feb. 10, 2010, found him stabbed to death in the bedroom of his apartment in the Park Row Condominium complex on Maple Wing Drive, police said.

Stafford said his client was living in Brooklyn at the time. There are no eyewitnesses placing James in the area when Pierson died, Stafford said, adding that James “doesn’t even know this person.”

Homicide detectives investigating Pierson’s killing in 2010 said they were “going over all aspects of his life. We look at everything.”

Suffolk police officers responded to the cousin’s call on a snow-covered February afternoon six years ago. Pierson’s cousin had told authorities he had gone to the man’s unit to check on him and found blood near the entrance, police said.

Homicide investigators said neighbors at the time told them they had heard nothing unusual before the killing.

Colleagues said Pierson had worked at the Brownsville, Brooklyn plant of M. Slavin and Sons, a fish wholesaler, for between six and seven years.

Pierson gutted fish and loaded trucks that deliver to retail stores and restaurants in the tri-state area, co-workers said in 2010.

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In a federal complaint filed in December 2009, Pierson accused his employer of sexual and racial harassment.

About a decade before the stabbing, he had served 90 days in prison after pleading guilty to third-degree rape and spent five years on probation, according to court records.