(Portland, OR)  --  A Portland police officer is being moved to desk duty after getting caught allegedly drinking and driving in a city-owned car.  Authorities say Beaverton Police caught Sergeant Timothy Robinson under the influence while off-duty Saturday morning.  The 18-year veteran was arrested and book at the Washington County Jail.  The city-owned car he was driving was assigned to Robinson for his work with the Drugs and Vice Division.  Portland police say the incident will be reviewed once the investigation is complete.