MITCHELL, S.D. -

Two suspects in the alleged September kidnapping of a 66-year-old man in Mitchell have pleaded not guilty to kidnapping and robbery.
    
Police allege 28-year-old Alex Rock, 21-year-old Marco Sherman and two women kidnapped and robbed the man before leaving him in a field without any clothes on Sept. 22, after the man had driven the two women home from a bar.
    
The two men entered their not guilty pleas on Tuesday. They're to stand trial in December.
    
One of the two women accused in the case is still being sought.