MONROE - Monroe Police arrested Matthew D. Gilbertson, 34, Monticello for possession of cocaine at 5:15 a.m. Dec. 1 after a traffic stop in the 400 block of 22nd Avenue. Gilbertson was also cited for driving while suspended, non-registration of vehicle, display of unauthorized registration plate and driving without insurance. A K-9 alerted to the vehicle during the traffic stop and the vehicle was then searched.