Rex Heuermann in booking image from the Suffolk County Sheriff's Office. Suffolk County Sheriff's Office/APHeuermann is charged with three counts of first-degree murder for the killings of Melissa Barthelemy in 2009, and Megan Waterman and Amber Costello the following year, according to the Suffolk County District Attorney. His father had built satellites for a living, Heuermann told the interviewer. They first connected him to the killings last year while conducting a review of evidence under a newly formed task force, which included the Suffolk County Police Department, the Suffolk County Sheriff’s Office, the New York State Police and the FBI. Speaking of the arrest, Suffolk County Police Commissioner Rodney Harrison said Friday: “Rex Heuermann is a demon that walks among us.

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