(CNN) A white supremacist gang member was sentenced to 56 years to life in prison for stabbing a man to death in California just three months after being released from prison, the Orange County District Attorney's Office said.

Craig Matthew Tanber, 40, of Los Alamitos, was convicted in December of one felony count of second-degree murder in the death of Shayan Mazroei and one count of the personal use of a weapon, the district attorney said in a statement Friday.

"Shayan's parents were robbed of their only son and a lifetime of memories," said Orange County District Attorney Todd Spitzer.

"The sentence handed down ... will keep (Tanber) behind bars for his entire adult life and prevent a cold-blooded killer from harming other innocent people and destroying more lives."

In September 2015, Tanber's girlfriend exchanged words with Mazroei when the two went outside a Laguna Niguel bar to smoke. Witnesses said the woman hurled racial slurs at Mazroei.

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