I think it was even harder for him, being on active duty — the shame and the stigma. He wanted to get more help,” an ex-girlfriend said.

The person suspected of blowing themselves up inside a Cybertruck outside the Trump International Hotel in Las Vegas on New Year's Day has been named by local networks as 37-year-old Army Special Forces veteran Matthew Livelsberger,

Master Sgt. Matthew Livelsberger, a U.S. Army Green Beret, is the suspect in the Cybertruck explosion on New Year's Day, authorities said.

Here's what we know about Matthew Livelsberger, a man suspected committing the recent Cybertruck bombing in Las Vegas.

Cybertruck bomber Matthew Livelsberger shot himself in the head just before the explosion at the Trump Las Vegas hotel, police said Thursday.

Livelsberger, 37, messaged ex-girlfriend Alicia Arritt about the vehicle before he fatally shot himself inside the Cybertruck which erupted in flames outside Trump International Hotel in Las Vegas on New Year's Day, per the Denver Gazette. Newsweek has reached out to Alicia Arritt via Facebook and the FBI via email for comment.

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