A federal court judge on Tuesday imposed a 40-year sentence on a White supremacist who was behind a 2004 bombing that seriously injured Scottsdale's diversity director.
A jury found Dennis Mahon, 61, guilty in February of conspiracy to damage buildings and property by means of explosives, malicious damage of a building by means of explosives, and distribution of information related to explosives.
His twin brother, Daniel, was found not guilty of a single count, conspiracy to damage buildings and property.
Dennis Mahon maintained his innocence in court moments before he was sentenced.
"I didn't do this crime. I can't apologize for something I didn't do,'' he said.