An Oroville man was sentenced to life in prison by a Butte County judge after he was convicted by a jury last month for attempted murder, assault with a semi-automatic firearm, as well as being a felon in possession of a firearm and ammunition. He had also pleaded guilty after his trial of attempting to intimidate witnesses during the trial. Peter was sentenced to 20 years in prison, with an additional 39 years to life after he serves those 20 years. Butte County District Attorney Mike Ramsey said the jury took less than two hours to return guilty verdicts on all charges and special allegations.