YAPHANK, N.Y. — An investigation into 10 bodies strewn along a remote New York beach parkway grew more perplexing Tuesday when police announced that DNA testing had determined that two victims found miles apart were related and that the remains of another unidentified woman matched body parts found 15 years ago.

Police suspect the 10 victims – whose remains were dumped periodically over more than a decade and found during searches begun last December – could have been left by several killers.

The victims include Megan Waterman of Scarborough, Maine, who was 22 when she disappeared in Hauppauge, N.Y., on the weekend of June 5, 2010.

Body parts have now been found in four separate locations in eastern Long Island. No suspect has been identified.

Authorities Tuesday also released sketches of two of the unidentified victims, as well as photos of jewelry found on two of the victims, an unidentified woman and a toddler.

The woman and the girl were found miles from each other, but police said DNA evidence shows they are related. Investigators have yet to confirm whether they are mother and daughter.