Dallas shooter Micah Johnson wrote cryptic message in his own blood on wall before he died Prison Planet.com Posted on July 11, 2016 Posted in Aggregated No Comments Tagged with Featured Stories, Tile London Independent | Investigators found explosive-making materials in his home. Share this:Share Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Email a link to a friend (Opens in new window) Email