PENDLETON, Ore. — Authorities have arrested more the five dozen suspects in an aim to take down drug trafficking organizations in northeast Oregon. Pendleton police Chief Stuart Roberts, head of local anti-drug team’s board, told the East Oregonian the goal was to dismantle drug dealing operations in Umatilla, Morrow, Union, and Gilliam counties. The focus in this week’s bust was on places reported as drug houses. Roberts reported the investigation used 116 undercover drug purchases that resulted in the arrests of 65 suspects Wednesday.