In another alcohol-related case in Waupaca County Court, 37 year old Derek L. Wanca of Antigo has been charged with his 4th drunk driving offense. The criminal complaint alleges Wanca was under the influence of morphine and fentanyl when he caused an accident on U. S. Highway 45 in the Town of Bear Creek in late August. Wanca has three prior operating while intoxicated convictions dating back to 2000. If convicted on the latest charge, he could face up to 6 years in prison. Wanca makes his initial appearance in Waupaca County Court next Tuesday.