Jason Beckman was sentenced to life behind bars Friday for the 2009 shooting death of his father, South Miami Commissioner Jay Beckman.
Judge Rodney Smith said Beckman will serve a mandatory minimum of 25 years in prison before he can ask for parole.
"This is who you are, you're very vengeful, your personality is a ticking time bomb," Smith told Beckman as he handed down the sentence.
Beckman, clad in orange prison clothing, expressed some remorse to Smith over the shooting.
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"My father shouldn't be dead, I wish he was here and not because I'm here but because I loved him and I really feel like I could have improved my relationship with him just by doing a few things differently," Beckman said.
Sentencing in the case had been delayed several times in the past year. Beckman was convicted of first-degree murder in the shooting in November 2013.
Beckman was originally charged with manslaughter with a firearm after he told police that he had just wanted to show the gun to his father, but he slipped and fell causing the gun to fire. The charges were upgraded to first-degree murder after friends and family came forward saying the then-17-year-old had talked of killing his father.
A search of the son's belongings showed the former South Miami High junior had compiled a hit list of enemies, with his dad's name on the top, authorities said. Defense attorneys had argued that Jason Beckman didn't shoot the gun intentionally.