A soldier who died in a Tesla Cybertruck accident in the U.S. left behind a note, according to AP.

American soldier Matthew Liveelsberger, who died on January 1 from an explosion in a Tesla Cybertruck near a hotel in Las Vegas, USA, left behind notes stating that the explosion should serve as a "wake-up call" and that it was not an act of terrorism.

This was reported by The Associated Press.

37-year-old Liveelsberger wrote that he needed to "clear" his mind "of the brothers" he had lost and "free himself from the burden of lives" he took.

"This was not a terrorist act; it was an alarming wake-up call. Americans only pay attention to spectacles and violence. What better way to convey your point of view than a stunt with fireworks and explosives?" Liveelsberger wrote.

In Liveelsberger's notes, there is information on political topics, addressing social issues, domestic and international problems, including the war in Ukraine. In one of the entries, he stated that the USA is "mortally ill and heading for collapse."

According to Assistant Sheriff Dori Koren, Tesla engineers are retrieving data from the Cybertruck, but not all of it has been analyzed yet.

"We still have a large volume of data to review. There are thousands, if not millions, of videos, photos, documents, web histories, and other materials that need to be analyzed," Koren said.

Law enforcement officials believe that Liveelsberger did not harbor ill will towards elected President Donald Trump. In one of the notes he left, he mentioned that the country needs to "rally" around Trump and Tesla CEO Elon Musk.

"While this incident is more public and sensational than usual, it appears to ultimately be a tragic case of suicide involving a decorated combat veteran struggling with post-traumatic stress disorder and other issues," said FBI Special Agent Spencer Evans.

The publication notes that in recent years, Liveelsberger confessed to his ex-girlfriend Alicia Arritt, who served as a military nurse, that he faced significant pain and exhaustion. Arritt explains his words as stemming from a traumatic brain injury.

According to Arritt, the soldier told her about the fatigue, the pain that kept him awake at night, as well as his experiences of violence during his service in Afghanistan.

"The last year my personal life has been pure hell," he said in messages to Arritt, which she shared with the publication.

Recall that on January 1, a car belonging to the well-known businessman Elon Musk's Tesla Cybertruck exploded near the entrance to the Trump hotel in Las Vegas, Nevada. As a result, one person died, and seven others were injured.

Background. Earlier, Mind reported that the driver who detonated the Tesla Cybertruck near the tower of elected President Donald Trump in Las Vegas was identified as Matthew Liveelsberger from Colorado Springs.