Cybergenetics remembers the World Trade Center victims

Back to Trials

Commonwealth of Pennsylvania v Leland Davis

Murder in McKeesport

Crime On October 25, 2008, Tamir Thomas was shot and killed at the Elks Club in McKeesport, PA.
Evidence The assailant fled, leaving behind a gun and a hat.
DNA The Allegheny County crime lab developed DNA data from the two evidence items.
Match The lab's manual analysis found a match statistic of 420 between the gun and Leland Davis. The hat also matched.
TrueAllele On the same data, the computer's statistic connecting the gun with Mr. Davis was 18 billion. Moreover, TrueAllele showed that no one else left their DNA on both the gun and hat.
Cybergenetics    On August 31, 2012, Dr. Mark Perlin testified at the Pittsburgh trial about the DNA match statistics in this case.
Outcome Leland Davis was convicted of third degree murder and weapons charges. He was sentenced to 23 years in prison.