LAS VEGAS — The highly decorated soldier from Colorado who exploded a rented Tesla Cybertruck outside the Trump hotel in Las Vegas used generative AI including ChatGPT to help plan the attack, Las Vegas police said Tuesday. A laptop, cellphone and watch are still under review nearly a week after 37-year-old Matthew Livelsberger fatally shot himself just before the truck blew up. Related Articles Crime and Public Safety | Tesla data helped police after Las Vegas Cybertruck explosion, but experts have wider privacy concerns Crime and Public Safety | Colorado soldier who blew up Cybertruck in Las Vegas told ex-girlfriend of pain and exhaustion after Afghanistan Crime and Public Safety | Colorado soldier behind Las Vegas Cybertruck explosion described “wake up call” in writings, police say Crime and Public Safety | FBI searches for motive behind Colorado soldier’s detonation of Cybertruck outside Trump hotel in Las Vegas A review of Livelsberger’s searches through ChatGPT indicate he was looking for information on explosive targets, the speed at which certain rounds of ammunition would travel and whether fireworks were legal in Arizona. Livelsberger, an Army Green Beret who deployed twice to Afghanistan and lived in Colorado Springs, left notes saying the explosion was a stunt meant to be a “ wake up call ” for the nation’s troubles, officials said last week. He left cellphone notes saying he needed to “cleanse” his mind “of the brothers I’ve lost and relieve myself of the burden of the lives I took.” The explosion caused minor injuries to seven people but virtually no damage to the Trump International Hotel. Authorities said that Livelsberger acted alone. Livelsberger’s letters touched on political grievances, societal problems and domestic and international issues, including the war in Ukraine. He wrote that the U.S. was “terminally ill and headed toward collapse.” Investigators had been trying to determine if Livelsberger wanted to make a political point, given the Tesla and the hotel bearing the president-elect’s name. Livelsberger harbored no ill will toward President-elect Donald Trump, law enforcement officials said. In one of the notes he left, he said the country needed to “rally around” him and Tesla CEO Elon Musk. Sign up to get crime news sent straight to your inbox each day.