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John Bittrolff (born July 1, 1966) is an American convicted murderer and former suspect in the Gilgo Beach serial killings case. In July 2014, he was charged with the murders of Rita Tangredi and Colleen McNamee. He was also a suspect in the murder of a third woman, Sandra Costilla, prior to the capture of alleged serial killer Rex Heuermann.
Then, in 2014, authorities caught a break: A DNA sample taken from Bittrolff’s brother proved a partial genetic match to semen found on the bodies of Tangredi and McNamee.
Bittrolff's attorney rejected the prosecutor's assertion. [25] Bittrolff lived in Manorville, 30 miles (48 km) from where the torsos of Gilgo Beach victims Jessica Taylor and Valerie Mack were recovered. Bittrolff was a hunter who was said to enjoy killing animals. He was a carpenter by trade with access to hacksaws and electric saws.
For years after his arrest, Mr Bittrolff was also the lead suspect in the Gilgo Beach murders, sources told The Post and was suspected in at least one of the 10 murders attributed to the Gilgo ...
A Y-DNA test analyzes similarities in Y-chromosome DNA markers, corresponding to specific locations on the Y chromosome. Markers have a Short tandem repeat (STR) that involve repeats of 2–5 DNA base pairs. At Sorenson labs, the number of STRs in a 36-marker haplotype was compared between the sample given and the database to determine relatedness.
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Accused Gilgo Beach serial killer Rex Heuermann has been charged with the brutal murders of two more women whose remains were found over two decades ago after authorities found a damning document ...
It was founded by a group of surname DNA project administrators in 2005 to promote DNA testing for genealogy. It advocates the use of genetics in genealogical research, provides educational resources for genealogists interested in DNA testing, and facilitates networking among genetic genealogists.