BILLINGS, Mont. -

A man accused in a triple murder on Montana's Crow Indian Reservation is due in court Wednesday for a mental health competency hearing.

Twenty-five-year-old Sheldon Bernard Chase has been ordered to appear via video conference from the U.S. Medical Center for Federal Prisoners in Springfield, Missouri. Also ordered to appear was prison psychologist Dr. Elizabeth Tyner.

Authorities say in October 2011 Chase took a rifle from his mother's house in North Dakota and travelled to the Crow reservation, where he shot his grandmother, cousin and the cousin's boyfriend.

If U.S. District Judge Susan Watters upholds an earlier determination that Chase is incompetent to stand trial, he'll go through a civil commitment process that could send him to an institution for the rest of his life.