The Colorado Springs soldier who died by suicide while blowing up a Tesla Cybertruck on New Year’s Day outside President-elect Donald Trump’s hotel in Las Vegas used ChatGPT to help plan the attack, according to new information released Tuesday by the Las Vegas Metro Police Department.

Searches from the phone of Master Sgt. Matthew Alan Livelsberger, 37, showed that he asked the generative AI chatbot, ChatGPT, questions about where to buy explosives and guns, the legal limit for how much Tannerite can be purchased in both Arizona and Colorado, and if certain firearms were capable of setting off the explosives, police said.

“I think this is the first incident that I’m aware of on (United States) soil where ChatGPT is utilized to help an individual build a particular device,” Kevin McMahill, the sheriff in Las Vegas, said at the news conference. “It’s a concerning moment for us.”

Kenneth Cooper, assistant special agent with the Bureau of Alcohol, Tobacco, Firearms and Explosives said that the explosion caused by Livelsberger could have been much greater because much of the material found in the Tesla was not detonated. When asked, Cooper said it remains unclear if this was an intentional choice by Livelsberger to not use all the materials he purchased.

Las Vegas police officials showed video of Livelsberger preparing for the explosion at a parking lot in Las Vegas. In the video Livelsberger can be seen pouring racing fuel in the trunk of the Cybertruck, and the fuel leaking out the back of the car as it exits the parking lot.

Although much new information was released, Cooper said one unanswered question surrounds how Livelsberger created the explosion.

Cooper speculated it was possible that the discharge of the firearm, which he stated happened almost simultaneously as the explosion, could have caused the fuel to ignite in the car, but that he couldn’t make a final determination.

Among the other lingering questions: why did Livelsberger seemingly at the last minute decide to conduct the suicide and explosion at the Trump International Hotel in Las Vegas?

More notes from Livelsberger’s phone released by police show that he was initially planning on driving the Cybertruck to the glass walkway at the Grand Canyon. One note dated Dec. 31, the day before the explosion in Las Vegas, Livelsberger seemingly commits to the Grand Canyon as his final destination.

“I reached my decision point when driving and chose to commit to the Grand Canyon for the final commit or not,” the note discovered on Livelsberger’s phone reads. “My next decision point 4 will be surveillance going to the glass walkway bridge parking area. I’m going to ID the launch route on foot and send it if I am still hot.”

Livelsberger never made it to the Grand Canyon, instead diverting course to Las Vegas. McMahill said during the news conference Tuesday that it still remains unclear why Livelsberger changed his final destination.

Throughout the notes shown to media Livelsberger expresses concern that he was being followed. McMahill reiterated that Livelsberger was not on the radar of either the Las Vegas police or the FBI before the explosion.

Further notes revealed by police Tuesday show that Livelsberger had been using alcohol and marijuana in the days leading up to his suicide, and that he was frustrated and hurt by what happened during his deployment in Afghanistan.

“These graphic encounters replay in my head every day, all day and it has ruined my relationships with my family and friends. I am now a shell of a human being with nothing to live for, it has all been taken away by my affiliations,” one of the notes discovered on Livelsberger’s phone read.

“There was not a time during my two years in Afghanistan where I had a clear understanding or rational feeling in my heart of why my brothers were fighting and dying. We failed and the credibility of military and political leadership was shredded when no one was held accountable.”

At last week’s news conference Spencer Evans, the FBI special agent in charge stated that it’s “likely” Livelsberger suffered from post-traumatic stress disorder (PTSD) and that there were family and personal matters that “may have been contributing factors.”

Last week, Las Vegas police released several notes found on Livelsberger’s phone indicating he felt the the United States was “terminally ill and headed toward collapse,” and that it was the fault of Democrats.

Livelsberger was on approved leave from the 10th Special Forces Group at Fort Carson when the electric truck he rented in Denver on Dec. 28 exploded in the valet drive-through of the Trump International Hotel on New Year’s Day, McMahill said.

Seven people were injured in the explosion, with Livelsberger the lone person who died.

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