(CBS/WCBS/AP) NEW YORK - Police in Long Island have confirmed that remains found this week during a search for possible victims of a serial killer are human, bringing the total number of remains found in the area in recent months to 10.
The first remains found Monday morning were about 1.5 miles east of the entrance to Jones Beach on Long Island, east of New York City. Later in the day, a human skull was found several miles away, reports CBS station WCBS.
The first set of bodies were discovered by police in December. All four were identified as female prostitutes who advertised on Craigslist, leading authorities to believe they could be dealing with a serial killer.
More recently, four more remains were found that have yet to be identified.
The Nassau County Medical Examiner was expected to begin forensic analysis Tuesday on the additional sets of human remains to determine if they're connected to the original four victims.
State police say they have completed their search of the area in Nassau County believed to be consistent with where the remains were discovered in nearby Suffolk County. Other than helicopter searches, the State Police has concluded that portion of the search and is moving the investigation to other avenues.
"I think this is an area that the killer feels very safe in and there's no reason to believe that it's not the same killer. There are some subtle differences. The first four were covered in burlap, the last four were not, but that doesn't mean they're different people," said Lawrence Kobilinsky of John Jay College of Criminal Justice, reports the station.
Police in December were following up on the disappearance of a Jersey City woman, Shannon Gilbert, who was seen working as a Craigslist escort in Long Island area. Her disappearance remains an open case.