Search for Shannan Gilbert

A heart-shaped collage with photographs of Shannan Gilbert is placed beside her coffin during a memorial service at Amityville Cemetery on Thursday, March 12, 2015.

Mari Gilbert kneels beside the coffin of her daughter, Shannan, at Amityville Cemetery on Thursday, March 12, 2015.

Adysen, 4, Sherre Gilbert's son, places a flower on the coffin of his aunt, Shannan Gilbert, at a memorial service at Amityville Cemetery on Thursday, March 12, 2015.

Attorneys John Ray, left, and Frances Nicotra, second from right, lead Mari Gilbert, center, to the grave site of her daughter, Shannan, at Amityville Cemetery on Thursday, March 12, 2015.

A memorial service for Shannan Gilbert is held at Amityville Cemetery on Thursday, March 12, 2015.

Mari Gilbert, mother of Shannan Gilbert, arrives at state Supreme Court in Riverhead with her lawyer, John Ray, where they announced a lawsuit against Dr. Charles Peter Hackett, formerly an Oak Beach resident, on Nov. 15, 2012.

Mari Gilbert visits the site where her daughter, Shannan Gilbert, was found dead inside a wooded area along the eastbound Ocean Parkway between Oak Beach and the Robert Moses Causeway. Joining her was her daughter, Sarra Gilbert and her husband, Manny Martinez. (March 10, 2012)

Mari Gilbert places flowers at the site where her daughter, Shannan Gilbert, was found dead inside a wooded area along the eastbound Ocean Parkway between Oak Beach and the Robert Moses Causeway on March 10, 2012.

Mari Gilbert, center with sunglasses, the mother of Shannan Gilbert, joins together with others as she lets balloons go at Oak Beach after learning that remains were found on Dec. 13, 2011.

Mari Gilbert, right, mother of Shannan Gilbert, is comforted by Lorraine Ela, mother of victim Megan Waterman, at Oak Beach on Dec 13, 2011.

Mari Gilbert, mother of Shannan Gilbert, appears with her lawyer, John Ray, at Oak Beach on Dec. 20, 2011, where he called for federal authorities to assist in the investigation into the Long Island serial killer case.

Mari Gilbert, mother of Shannan Gilbert, appears with her lawyer, John Ray, at Oak Beach on Dec. 20, 2011, where he called for federal authorities to assist in the investigation into the Long Island serial killer case.

Mari Gilbert, left, the mother of Shannan Gilbert, and Johanna Chaneyfield, a family friend, hold signs at Oak Beach on Sunday, May 1, 2011.

Mari Gilbert, mother of missing woman Shannan Gilbert, in the A & E program, "The Long Island Serial Killer," airing Monday, Dec. 5, 2011.

Shannan Gilbert, center, with sisters Sarra, left, and Sherre.

Shannan Gilbert, left, with her aunt Lori Grove in December 2009.

Shannan Gilbert, right, with her family in 2009.