NEW YORK -- Searches by the Gilgo Beach Task Force expanded through a wide area of New York's Suffolk County woods this weekend. On Friday, the search extended to North Sea, where Sandra Costilla, 28, was discovered dead in Nov. 1993. John Bittrolff has been long suspected but never charged in her death, according to our sister station WABC. Bittrolff was convicted in 2017 in the murders of two other women, whose bodies were found in 1993 and 1994 in East Patchogue and Shirley