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Strollo said DNA from a cigarette that police saw Thomas discard after leaving a local court was used to confirm that Thomas was the man wanted in the attacks, which began in 1997. He said Thomas has lived in New Haven for about four years. Thomas was arrested Friday on Connecticut charges of first-degree sexual assault and risk of injury to a minor. Authorities said he tried to hang himself Saturday in his cell but was returned to jail after a brief hospital stay. At the news conference in Virginia, Prince William County prosecutor Paul Ebert and Fairfax County Police Detective John Kelly said the case would have been solved years ago if Virginia police had been allowed to use what is called "familial DNA" searching. In some cases, a DNA profile may not present an exact match in law enforcement databases but is close enough to indicate a family connection that could be used to track down a suspect. Most states, though, bar use of familial DNA searches because of privacy concerns. Because Thomas did have a family member whose DNA was in a police database, Ebert said, that tool could have allowed police to home in on Thomas years ago. Virginia is now moving toward the use of familial DNA searches. In general, cracking the case was difficult because it spanned so many years and so much area, Rohrer said. "We always suspected a tip from the public would help us solve this case," he said. The database credited with helping catch a suspect, the Law Enforcement Information Exchange, includes tens of millions of records generated from a variety of sources
-- everything from arrest records and traffic tickets to police reports and even pawn shop records, indexed by time and location. Ebert, a prosecutor for more than 40 years who has handled numerous high-profile cases, including the conviction of D.C. sniper John Allen Muhammad, said the arrest of Thomas was one of the happiest days of his career. "This case concerned me almost as much as the D.C. sniper case did," Ebert said, noting the fear generated within the community from the rapist's most recent attack, the Halloween 2009 assault on three teenage girls as they were trick-or-treating. "I'm hopeful the public is now more at ease."
[Associated
Press;
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