SOUTH HAVEN, Mich. (AP) — A 49-year-old man who was a witness for prosecutors and had immunity for his testimony in a 1988 southwestern Michigan murder case will stand trial in the killing.

A Van Buren County judge on Friday bound Guy Carl Simpson over for trial on an open murder charge in the slaying of 22-year-old Charles Paul Miller of Bangor.

Authorities say Simpson was one of three men who lured Miller into a marijuana field in Allegan County’s Lee Township, shot him in the back of the head because of a drug debt and buried his body. Arrests first were made in the case in 2000.

The Herald-Palladium of St. Joseph reports that another defendant, Junior Fred Blackston, will stand trial in May after appealing two earlier convictions in the case.