Scott Curley has been charged with first-degree murder in the 2010 shooting death of Kane County Deputy Brian Harris.
At least one mental health expert says Curley understands the proceedings against him but his thought disorder, delusional beliefs and auditory hallucinations hamper his ability to assist in own defense.
Prosecutors say there's ample evidence that Curley is capable of consulting with his lawyers and aiding in an insanity defense.
Curley has pleaded not guilty to the murder charge, aggravated assault on a police officer and a citizen, and burglary and theft.
He was captured near Kanab, Utah, four days after he fled on foot into the wilderness along the Arizona-Utah border following the shooting.
(Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)