An Illinois State Police sergeant testified Wednesday that an Oswego man accused of shooting his wife and three children to death became "more upbeat" during a police interview after suddenly recalling that his wife had shot him.
Jurors heard the testimony in the murder trial of Christopher Vaughn in Will County.
Sgt. Gary Lawson finished three days on the witness stand. Jurors now have watched more than eight hours of videotaped police interviews of Vaughn from the day of the 2007 shootings on a frontage road near Channahon.
Prosecutors say Vaughn killed his family as part of a scheme to start a new life in Canada.
Vaughn's attorneys say his wife, Kimberly, carried out the shootings because she was distraught over marriage troubles.