An encounter with a R.I.D.E. check stop has brought charges against three Mississippi Mills Township youths. The three were stopped late Saturday evening in Arnprior. Police discovered marijuana in the vehicle and the 17, 16 and a 15 year-olds have each been charged with possession of marijuana over 30 grams. They have a date in Renfrew Youth Court in February. Under the Youth Criminal Justice Act they cannot be identified.