Matthew Livelsberger – the suspected driver of the Tesla Cybertruck that exploded outside the Trump International Las Vegas Hotel on New Year’s Day – died of a self-inflicted gunshot wound before the explosion, officials said at a news conference Thursday.

Investigators had already collected significant evidence that Livelsberger was behind the wheel of the vehicle before publicly confirming their suspicions.

Officers found credit and ID cards issued in his name, sales receipts that identified him as the owner of the weapons found in the wrecked vehicle, and identified tattoos similar to Livelsberger’s on the driver’s body, whose physical injuries slowed the identification process.

The Clark County coroner on Thursday finally identified Livelsberger, of Colorado Springs, Colo., as the driver. His cause of death was a self-inflicted intraoral gunshot wound.

No one else was seriously injured, although seven bystanders suffered minor injuries, officials said.

Livelsberger, an active-duty Army soldier, was found with a gun at his feet. Two firearms – a handgun and a rifle – were found “burned beyond recognition” in the vehicle, said Sheriff Kevin McMahill of the Las Vegas Metropolitan Police Department.

Both weapons were purchased legally on Monday, he added.

Livelsberger rented the Tesla vehicle in Denver on Saturday through the Turo app before driving through cities in Colorado, New Mexico and Arizona to Las Vegas. His progress was tracked through Tesla charging stations, officials said.

The vehicle first pulled into the valet parking at the Trump International Las Vegas Hotel just after 7:30 a.m. Wednesday, officials said. It then left the area and traveled down Las Vegas Boulevard before returning to the valet area at around 8:39 a.m. and exploding 17 seconds after arriving.

Livelsberger served as a Green Beret in the Army and was on approved leave from duty in Germany at the time of his death, a U.S. Army spokesman said Thursday.

He received extensive decorations in combat, including the Bronze Star with a “V” for valor, indicating heroism under fire. According to Army records, Livelsberger received four additional Standard Bronze Star medals. He also received the Afghanistan Campaign Medal with three stars. Each star represents deployment in a separate campaign in Afghanistan.

The Las Vegas incident is not believed to be directly related to the New Year’s Day truck attack in New Orleans that killed 14 people – as well as the suspect – and injured 35 others, according to the FBI. The truck used in the New Orleans attack was also rented through the Turo app, officials said.

“At this point, there is no clear connection between the attack here in New Orleans and the one in Las Vegas,” said Christopher Raia of the FBI on Thursday morning at a press conference on the attack in New Orleans.

The two drivers may have crossed paths at Fort Liberty or in Afghanistan, although there is no evidence the two were ever deployed together or knew each other, McMahill said.

President Joe Biden said in a statement Thursday that federal investigators had no evidence linking the attacks, but said he had directed them to continue looking.

Livelsberger was a supporter of President-elect Donald Trump, an official briefed on the investigation told ABC News. His wife, whom investigators spoke to in Colorado Springs, said he had been out of the house since around Christmas after an argument over infidelity allegations, the official said.

His wife told officers she didn’t think Livelsberger wanted to hurt anyone, the officer told ABC News.

Livelsberger allegedly told the person he rented the truck from that he wanted to camp at the Grand Canyon, the official told ABC News.

Investigators are still trying to determine how the items in the truck were detonated, but because the vehicle’s contents were so badly burned, it could be a slow process, according to the official.

The sheriff said Tesla CEO Elon Musk assisted the investigation by having the truck unlocked after it automatically locked itself when it exploded and by providing investigators with video of the suspect at charging stations on his route from Colorado to Las Vegas.

McMahill said police believe the explosion was an “isolated incident” and that “there is no further threat to the community.” He also said police don’t believe anyone helped the Las Vegas suspect.

“We believe everything is safe now,” McMahill said.

A video played at the press conference in Las Vegas showed a load of firework-like mortars, gas cans and camping fuel cans in the back of the truck.

The property is often the subject of threats and increased security due to its connection to Trump.