India, Sept. 12 -- Tyler Robinson, the 22-year-old accused of assassinating conservative activist Charlie Kirk, spent days laying out a plan that investigators say showed both preparation and intent. According to Utah Governor Spencer Cox, Robinson used the messaging app Discord, stashed a rifle in bushes, and even switched outfits in an effort to avoid capture.

Robinson's roommate turned over Discord messages from an account named "Tyler," in which he described retrieving a rifle from a drop point, concealing it under a towel, and watching over the area. The chats also mentioned engraving bullets, attaching a scope and noting that the rifle was "unique." He further wrote that he had changed his clothing to disguise himself after the sho...