Robert Knorr , Jr. pleaded guilty to the charge .
Robert Knorr , Jr. was sentenced to three years in prison which was served concurrently with his 16 - year sentence for the unrelated 1991 murder of a Las Vegas bartender .
Robert Knorr , Jr. pleaded guilty to the charge and was sentenced to three years in prison which was served concurrently with his 16 - year sentence for the unrelated 1991 murder of a Las Vegas bartender .