On the day of the Sandy Hook shooting, all the news networks confidently said that Adam Lanza killed his mother with a .22 bullet, and destroyed his hard drive with a screwdriver.
They came to this conclusion without any witnesses or other physical evidence that he had committed either of those acts. He apparently didn’t have a .22 weapon in his possession.
Someone obviously did not want the contents of the hard drive read. Why would a person who was planning to fire a shot heard around the world and then die, want to hide any record of their life or why they did what they did? Whoever destroyed that hard drive obviously wanted something hidden. We need to know what that was, regardless of who did it.
The FBI was able to recover the contents of hard drives in the World Trade Center, but a screwdriver foiled them.