Investigators know that a highly decorated Army soldier shot himself in the head inside a Tesla Cybertruck packed with fireworks just before it exploded outside Trump International Hotel in Las Vegas on New Year’s Day, but authorities say there are questions about why he chose that car and location.

A Tesla Cybertruck exploded outside Trump International Hotel Las Vegas' entrance on Wednesday, killing the driver and wounding seven people, law enforcement officials said. The big picture: Clark County/Las Vegas Metropolitan Police Sheriff Kevin McMahill said at a Wednesday afternoon briefing that "camp fuel canisters and large firework mortars" were found in the back of the truck.