Matthew Livelsberger's unhinged 'suicide note' explaining why he blew up Cybertruck outside Trump Vegas hotel

Cybertruck bomber Matthew Livelsberger claims China is stalking the US with advanced drones in an unhinged suicide note.

The former Green Beret and active US Army Ranger shot himself in the head seconds before an improvised explosive detonated in the back of his rented truck.

Explosive blast killed one person and injured half a dozen more when it went off outside the Trump Hotel in Las Vegas on Wednesday.

Investigators probed if the bombing was connected to the terrorist attack in New Orleans, or if it was motivated by personal issues.

But the suicide note he sent to retired US Army intelligence officer Sam Shoemate shortly before the bombing may indicate it was to get attention for his concerns.

'What we have been seeing with "drones" is the operational use of gravatic (sic) propulsion systems powered aircraft by most recently China in the east coast, but throughout history, the US. Only we and China have this capacity,' he worte.

'China has been launching them from the Atlantic from submarines for years, but this activity recently has picked up. 

'As of now, it is just a show of force and they are using it similar to how they used the balloon for sigint (signals intelligence) and isr, which are also part of the integrated comms system. There are dozens of those balloons in the air at any given time.'

More to come.