Source : http://www.youtube.com/watch?v=l1p4q3QrfZc Comment: Kendrick Johnson 's body was found in a rolled-up gym mat in January . Previously released video was missing footage from high school gym . Forensic video analyst : CNN also provided Fredericks and his company , the Spokane , Washington-based Forensic Video Solutions , with hundreds more hours of video from 31 cameras in other parts of Lowndes High School . Hard drives may have been overwritten by now .
Source : http://www.youtube.com/watch?v=l1p4q3QrfZc Comment: Kendrick Johnson 's body was found in a rolled-up gym mat in January . Previously released video was missing footage from high school gym . Forensic video analyst : Hard drives may have been overwritten by now .