A routine traffic stop resulted in the arrest of a dangerous parolee-at-large in Yucca Valley. Saturday night at about 9:15, Deputy Chris Coillot, conducted a traffic enforcement stop at Church Street and Pima Trail on a vehicle that had a modified exhaust system. While speaking to the occupants of the vehicle, Deputy Coillot recognized the passenger, Derek Cowley, 25, of Yucca Valley, who was considered an armed and dangerous parolee-at-large. Deputy Coillot arrested Cowley for his no bail parole warrant and booked him at the Morongo Basin Jail.