Indiana Central News
Terre Haute, Indiana
Terre Haute, Indiana
When officials sort through evidence at a crime scene, attention to detail matters.
A bloodstain, a broken window or seminal material from the victim of a sexual assault are valuable sources in solving a crime, experts say.
The Indiana State Police Laboratory in Indianapolis plays a key role in making or breaking a case when it comes to matching DNA. Matches can provide valuable lead information to law enforcement agencies.
Today marks the ISP Laboratory's 5,000th match achievement using specialized DNA software.
Nearly 20 years in the making of that many matches has many experts optimistic about achieving twice as many in the future -- the 10,000 matches- mark, according to an ISP press release tonight on the milestone.
A law that initially applied to offenders convicted of crimes against others or burglary to provide a DNA sample--or profile--for the database has expanded to into a larger tool to track more crime since its inception in the 1990s. Since 2005, the law for the database, called the Combined DNA Index System (CODIS,) is applicable to all convicted felons.
Kristine Crouch, ISP forensic scientist, explains that a match is made approximately 48 percent of the time.
“This means that for every two unknown profiles a match results in a potential investigative lead to one of the two DNA profiles. The match may be to the name of an offender in CODIS or may match to an unknown DNA profile linked to two or more crime scenes,” she said, adding, “ These matches may allow for different investigating agencies to collaborate and work toward solving crimes when the same DNA profile is linked to crimes in different jurisdictions anywhere in Indiana or across the United States."
The ISP Laboratory is where the collected and submitted samples are analyzed and converted into profiles. The samples are collected at many locations across the state, including: Indiana Department of Corrections locations, county jails and probation and community corrections facilities.
DNA evidence recovered from crime scenes -- whether an an unknown suspect or a convicted criminal-- is entered into CODIS.
Reportedly, the CODIS software compares all submitted profiles to one another weekly and identifies any matches between profiles collected from crime scenes with known DNA submissions of convicted felons.
Some interesting facts about DNA:
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News Writer: Lucy Perry