Text messages between Tyler Robinson and his roommate, Lance Twiggs, from Sept. 10 and Sept. 11 were presented during preliminary hearings Thursday. Robinson is charged in the shooting death of conservative activist Charlie Kirk. Prosecutors allege the messages capture a conversation that took place shortly after the shooting. Part 4 focuses on messages discussing engraved bullets and a rifle Robinson allegedly described as belonging to his grandfather. 📸: Meghan Thackrey, KSL #charliekirk #tylerrobinson #k9 #engravedbullets