OKSALOOSA, Iowa (AP) -- Psychiatric tests have been ordered for a 26-year-old Oskaloosa man accused of using a battle ax to kill a man.

Bradley Arterburn is charged with first-degree murder in the death of 58-year-old Robert Horovitz, of Davenport. Police say he used the double-edged battle ax in June to attack Horovitz at the home Arterburn shared with his mother in Oskaloosa.

The Oskaloosa Herald reports Arterburn had been scheduled for trial on May 1. That will be delayed by the tests. A status hearing in the case is scheduled for May 14.

Arterburn has pleaded not guilty.