(NEW YORK) -- A teenager who received a taunting phone call from a man who is believed to have killed her sister and at least seven other people said Monday the man claims he is not done killing and she fears he may now come after her.
"I just don't understand why he chose me...how many other girls and how many other families...why was I chosen, why was I taunted?" she told ABC News Monday. The teenager was shown in silhouette and spoke on the condition that she not be identified out of growing fears for her safety.
Her older sister, Melissa Barthelemy, disappeared in July 2009. Her body was found in December on Gilgo Beach in New York's Long Island area along with the bodies of three other women. All found women were prostitutes who advertised on Craigslist, police said.
Four more bodies were found earlier this month, including what the New York Post claims may be the body of a child. Those victims have yet to be identified. In addition, police are still searching for the body of Shannan Gilbert, a woman who also advertised sexual services on Craigslist and was last seen near Gilgo Beach.
The search for bodies has expanded from Long Island's Suffolk County to the beaches in the adjacent Nassau County. In addition, State Park Police and the FBI, including the FBI's behavioral analysis team, have joined the dragnet for bodies and analysis of clues.
Sources told ABC News there are multiple suspects who may be linked to the Long Island bodies.
Barthelemy's sister said she was just 15 when she received the first in a series of calls from the man believed to be the killer. The calls eerily came from her sister's cell phone. The man sounded calm, despite his angry words, the teenager said.
"They were very taunting and angry words," she said. "[It was] very scary. My heart would stop and I just didn't know what to do. I'm scared of my own protection, the fact that he's calling my phone... I have to be worried about is that going to happen to me one day?"
She said that it was frustrating because the man would allow her to ask a few questions about her missing sister's whereabouts.
The girl also said she believes the man isn't done with his killing spree.
"If he's doing that many murders he's not going to stop, he obviously enjoys it and he's sick in the head," she said.
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