Who is Matthew Livelsberger? Bomber in Las Vegas Cybertruck explosion is married Green Beret from Colorado Springs

Tesla Cybertruck bomber Matthew Livelsberger is a long-serving married Green Beret who was on leave from active duty when he carried out the attack outside Donald Trump's Las Vegas hotel. 

Livelsberger, 37, was identified by law enforcement sources as the bomber in Wednesday's attack, which left seven wounded. The electric vehicle exploded about 15 seconds after the driver pulled up in front of the hotel's entrance. 

The blast was caused by 'a bomb carried in the bed of the rented Cybertruck' or 'very large fireworks', according to Tesla CEO Elon Musk.