Kevin D. Mooney, 32, of Bethany, pleaded guilty to involuntary manslaughter in Nodaway County Court. Mooney was charged with second degree murder in the death of 21-year-old Tomarken Smith, of St. Louis.
Smith was a senior at Northwest when he was assaulted outside a bar in Maryville on Sept. 14, 2012.
Tony Overlin, 24, also of Bethany, is charged with second degree murder and first degree assault in Smith's death. Overlin has a plea hearing scheduled for Wednesday afternoon in Buchanan County Court.
Mooney's sentencing is scheduled for Sept. 30.