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b'Brian Laundrie\'s sister speaks to protestors outside her home saying she doesn\'t know if her brother had anything to do with Gabby Petito\'s death. \\xa0Cassie Laundrie says FBI investigators have asked her not to make public comments, but that she felt she could no longer stay silent as the media disruption was upsetting her children. Asked if she believes her brother killed Petito, who was found dead in Wyoming\\u2019s Bridger-Teton National Park on September 19, Laundrie said, \\u201cI don\\u2019t know.\\u201d She also addressed said while she saw her brother while he was camping with his parents, that Gabby was not discussed. \\xa0\\n\\nJoining Nancy Grace Today:Wendy\\xa0Patrick - California prosecutor, author \\u201cRed Flags\\u201d www.wendypatrickphd.com \'Today with Dr.\\xa0Wendy\' on KCBQ in San Diego, Twitter: @WendyPatrickPHDDr. Angela Arnold - Psychiatrist, Atlanta GA www.angelaarnoldmd.com, Former Medical Director of The Psychiatric Ob-Gyn Clinic at Grady Memorial HospitalSheryl\\xa0McCollum\\xa0- Forensic Expert & Cold Case Investigative Research Institute Founder, ColdCaseCrimes.org, Twitter: @ColdCaseTips Joe Scott Morgan - Professor of Forensics: Jacksonville State University, Author, "Blood Beneath My Feet", Host: "Body Bags with Joseph Scott Morgan" Michael Ruiz - Reporter, Fox News Digital,\\xa0TWITTER:\\xa0@MikeRreports'