A Troy man has pleaded guilty, but mentally ill, to his father's murder.
Patrick Mikes Jr. pleaded guilty Wednesday to second-degree murder for killing Patrick Mikes Sr.
He's scheduled to be sentenced on Sept. 10.
Patrick Mikes Sr., 55, was reported missing July 29,2012, by his two sons -- who said the father had left their home two days earlier for a bike ride and never returned home.
Prosecutors said evidence in the family's home suggested the younger Mikes violently beat his father to death in their basement.
More coverage: The murder of Patrick Mikes