BREAKING UPDATE: Elon Musk says ‘very large fireworks’ or ‘bomb’ in bed of Cybertruck caused Las Vegas explosion

"The whole Tesla senior team is investigating this matter right now," Musk wrote. "Will post more information as soon as we learn anything. We’ve never seen anything like this."

Three senior law enforcement officials told MSNBC that the explosion of the truck was "intentional." Elon Musk said that his team "confirmed that the explosion was caused by very large fireworks and/or a bomb carried in the bed of the rented Cybertruck and is unrelated to the vehicle itself. All vehicle telemetry was positive at the time of the explosion."

Musk later added, "Appears likely to be an act of terrorism. Both this Cybertruck and the F-150 suicide bomb in New Orleans were rented from Turo. Perhaps they are linked in some way."

A source told CNN that explosives inside the Truck included gas tanks, camping fuel, and fireworks which authorities believe were connected to a detonation system that was controlled by the driver.

Law enforcement sources told the New York Post that the Cybertruck was rented off Turo, the same carsharing app used by Shamsud-Din Jabbar to rent the truck used in the New Orleans terrorist attack earlier the same day.

Authorities said during a Wednesday afternoon briefing that one person, who was inside the truck, died and seven others were injured. The incident took place just after 8:40 am local time at 2000 Fashion Show Drive. Authorities are investigating the case as a possible terrorist attack.

The explosion took place in the valet area of the hotel. The truck was reportedly carrying firework-style mortars. Musk said in a comment that the design of the stainless steel truck likely saved lives. "Cybertruck is the worst possible choice for a car bomb, as its stainless steel armor will contain the blast better than any other commercial vehicle," he wrote.