Randolph County prosecutors amended charges made to 19-year-old Hunter Ames and 20-year-old Alayna Mason to include first degree murder charges in connection to the death of Kayla Huff of Moberly.
23-year-old Christopher Hull and 26-year-old Julian Mason have also been arrested in connection to the incident.
Hull has been charged with kidnapping and tampering with evidence, while Mason has only a tampering charge.
All four of them have a hearing scheduled in Randolph County Court on Monday at 1:30