 And a tip to the Cass County Sheriff's Office led to the arrest of a known felon in possession of several firearms and possibly selling narcotics. That tip stated that the firearms were being held in a travel trailer in Howard Township. With help from the Pokagon Tribal Police, a traffic stop was made on the vehicle and travel trailer in the 2500 block of Lakeshore Drive in Niles Monday. Inside the trailer, police found nearly two dozen guns, two of which were stolen, and a large quantity of ammunition.