Matthew Livelsberger -- the driver of the Tesla Cybertruck that exploded outside the Trump International Las Vegas Hotel -- shared "grievances" in two letters.

a U.S. government official told USA TODAY earlier Thursday on the condition of anonymity. The Army confirmed Livelsberger died Wednesday. The Las Vegas explosion involved gasoline canisters ...

The truck was rented to Matthew Alan Livelsberger, two senior law enforcement officials told NBC News. An Army spokesperson said Livelsberger was on approved leave.

Livelsberger is believed to have shot himself in the head immediately before the detonation, Las Vegas Metropolitan Police Department Sheriff Kevin McMahill said at a news conference Thursday.

Matthew Livelsberger, a decorated U.S. Army Green Beret, shot himself to death on New Year’s Day and initiated a Cybertruck explosion outside the Trump International Hotel in Las Vegas.

Police are poring over what they believe are letters left by Matthew Livelsberger -- the driver of the Tesla Cybertruck that exploded on New Year's Day outside the Trump International Las Vegas Hotel ...