Woodbury County District Court records say the tests were ordered last week for 30-year-old Daniel Levering. He’s pleaded not guilty to the July 23 slaying of 36-year-old Vincent Walker, who lived in Winnebago, Nebraska.

Police say three people including Levering assaulted Walker while he was washing his car in Sioux City. Authorities have not reported the arrests of the two other people. Levering had been scheduled to begin trial Tuesday.

The judge said in his order that if the evaluation finds that Levering is not mentally competent for trial, the state must provide treatment if it’s believed Levering’s competency can be restored.