/*Seth Ireland*/ died in January of 2009 -- after he was beaten to death at his southwest Fresno home.
His mother's boyfriend, Labaron Vaughn pleaded guilty to second degree murder Tuesday. Prosecutors had been seeking a first degree conviction.
The plea comes just one week after Seth's mother, Rena Ireland, also accepted a plea deal and agreed to testify against Vaughn.
Vaughn faces 15 years to life in prison at his sentencing next month.
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