New details are emerging in the still-unsolved murder at a Lynnfield mansion Sunday morning.

Police confirmed Wednesday that two off-duty Boston police officers were among the dozens of guests at a wild party where a 33-year-old man was shot, the Boston Herald reported.

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Keivan Heath, 33, of Randolph, was found injured at the property, 8 Needham Road, at around 3 a.m. He later died at the North Shore Medical Center Union Hospital in Lynn. 

A group who said they were old college friends had rented the multimillion-dollar mansion for Memorial Day weekend. Alex Styller, who owns the estate, which is currently listed for sale on Zillow, told the    Herald that he rented the home to a local, declining to identify him.

The renter has said he didn't know Heath or who the shooter was.

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The officers who attended the party "have been fully cooperative" with authorities and remain on duty, said Boston Police Department Officer Rachel McGuire.

Heath's killer remains at large.