A Natrona County man has changed his plea in a case in which he is accused of stabbing another man, that he was in a limousine with.

Sixty-four year old William Waldroup has pleaded guilty to one count of aggravated assault.

Mills police say in middle-March, officers were called to the Beacon Club, for a report of an assault with a knife.

One witness told investigators that earlier in the evening, a group of seven people, including the witness and the victim, got into a limo to go to the Beacon Club.

Waldroup was already in the vehicle at the time and appeared to be intoxicated and angry.

When everyone tried to exit the limo at the club, the witness said Waldroup attacked the victim from behind.

The victim sustained a non-life threatening cut to his neck.

Police later found Waldroup with blood on him, as well as a bloody knife.

A motive for the attack was not determined, and witnesses indicated it was unprovoked.

As part of a plea deal, prosecutors will seek no more than a four and one-half year prison sentence.

Waldroup is free on $25,000 bond and will be sentenced at a later date.