Shannan Gilbert's Cause of Death Is Undetermined

On the two-year anniversary of Shannan Gilbert's disappearance at Oak Beach on Tuesday, the Suffolk County Medical Examiner met with her family to report the autopsy findings.

The results were deemed "inconclusive," and the investigation into her death is still on-going.

The search for New Jersey escort - who disappeared in May 1, 2010, after meeting a client for sex on Oak Beach - led police to the discoveries of 10 sets of human remains, many believed to be the victims of a Long Island serial killer.

Gilbert's body was found in a marshy area near Oak Beach .

Gilber's mother, Mari Gilbert, told NBC 4 New York, that she was disappointed by the meeting with the examiner: "I was hoping for something more substantial."

According to the family's lawyer, John Ray, two bones were missing from the skeleton's neck, and they believe the 911 call Gilbert made that night was evidence that she was being pursued, and not a victim of an accidental drowning, as Suffolk Police have suggested.

Five of the bodies found on the barrier beach island have been identified as sex workers.

There are no suspects in the case, police said, nor in the Gilgo Beach murder investigation.