(Pella, IA) – A 25-year-old Pella man accused of trying to kill his mother is going to spend the next 45 years behind bars. Brandon Thoma was back in court, where he plead guilty on charges of attempted murder, burglary and assault. Police say, Thoma broke into his mother’s home last November..where he pushed her down a flight of stairs and attempted to choke her with a shovel.