PHOENIX (AP) - A Mesa man accused of killing his mother with a frying pan and hammer in 2013 has been sentenced to 20 years in prison.
Maricopa County prosecutors say 18-year-old Michael Helms also was sentenced Monday to five years of probation.
Helms pleaded guilty in February to second-degree murder and aggravated assault.
He originally faced first-degree murder and other charges in the Oct. 25, 2013 death of Tina Helms Spencer and a nonfatal attack on his stepfather.
Authorities say Helms - then 16 - struck his mother with a frying pan and hammer, choked her, dragged her body to a backyard shed and cleaned up the scene.
He also was accused of striking his stepfather with a frying pan and choking him. The stepfather managed to break free and call police.
Copyright 2015 The Associated Press modified.