A day after announcing the FBI is joining the so-called Long Island serial killer investigation, police officials toured the area where the first of 11 sets of human remains were found five years ago.

Suffolk County Deputy Police Commissioner Tim Sini (SIH'-nee) says the department is reviewing the unsolved case anew. He and other officials gathered Friday along a remote stretch of Ocean Parkway to survey where some of the bodies were found.

No suspects have ever been identified in one of Long Island's most vexing murder mysteries.

Human remains — eight women, a man and a toddler — were found strewn along several miles of thicket adjacent to the parkway. The remains of another woman were found several miles away, but police believe her death is not related.