Retired mixed martial arts star Tim Kennedy said he was “flabbergasted” when he learned that Matthew Livelsberger is believed to be behind the New Year's Day blast that injured 7

Former UFC fighter Tim Kennedy said he competed 13 years ago in a reality TV show with Matthew Livelsberger, the suspected man behind the Cybertruck explosion at Trump Hotel International. Police said Livelsberger shot himself in the head before the explosion,

Matthew Livelsberger -- the driver of the Tesla Cybertruck that exploded outside the Trump International Las Vegas Hotel -- shared "grievances" in two letters.

The driver, who died before the blast, urged his fellow servicemembers to force Democrats out of government “by any means necessary.”