BUTTE, Mont. -

A former Butte man pleaded not guilty to charges he killed his father more than 5 years ago.

Prosecutors allege 24-year-old Adam Hatfield beat his father, 49-year-old Matt Hatfield, to death with with a baseball bat in 2008.

Authorities say Hatfield's skull was found near a campground north of Butte.

Police arrested Adam Hatfield in South Dakota in February after authorities say they were able to build enough evidence to charge him.