SASKATOON - A 25-year-old man charged with attempted murder after another man in a motorized wheelchair was assaulted says he wants to explain himself.

Justin James Crowe has made his first appearance in Saskatoon provincial court, where he also faced charges of uttering threats and breaching a court order.

Crowe told the judge he did not want a lawyer, and was to appear in court later in the day, but that was later postponed until Wednesday.

Police say Robert Carignan, who is 57, was exercising his dog early Sunday when he was pulled from his chair and attacked.

He was taken to hospital where he remains in critical condition with multiple head injuries.

Police believe the attack was random.