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Physical Evidence
Handcuffs and leg irons
Tyson testified that another officer found handcuffs and leg irons in a bookshelf, although Tyson did not see their exact position there. In closing argument, defense counsel discussed the restraints and the absence of DNA matching Dassey or Halbach on them.
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Defense counsel argued in Dassey's closing argument that the restraints had Avery's DNA on them but no DNA matching Dassey or Halbach.