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(NEWSER) – Authorities on Long Island are sifting through a pair of deaths so grisly that multiple witnesses describe the scene as something they thought "was a Halloween prank." A woman in her 60s was apparently decapitated at her Farmingdale apartment shortly before 8pm last night, reports Newsday

"We saw the body on one side and saw the head on the other side" of the pavement, one resident tells CNN . "I thought everything was a prank." About 25 minutes later and about 1,000 feet away, a man in his 30s was killed when he leaped in front of a Long Island Rail Road train. Authorities believe that he's the woman's son, who also lived in the Farmingdale apartment, and are investigating the deaths as a murder-suicide.

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