Two men suspected in the abduction and apparent killing of Montana teacher Sherry Arnold have pleaded not guilty to charges of aggravated kidnapping.

Forty-seven-year old Lester Van Waters Jr. and 22-year-old Michael Keith Spell were arraigned Tuesday in state district court in Arnold's hometown of Sidney, near the North Dakota border.

The 43-year-old math teacher disappeared during a morning run on Jan. 7.

Spell has allegedly told investigators that he grabbed Arnold as she was jogging along a city street and that Waters choked her to death.

State District Judge Katherine Irigoin set separate five-day trials for the men to begin in July.

Despite Spell's alleged efforts to lead authorities to Arnold's grave site, her body has not been found.

More From Newstalk KGVO 1290 AM & 98.3 FM