(Portland, OR)  --  Crime Stoppers is offering a one-thousand-dollar reward for information leading to an arrest, following a deadly stabbing in downtown Portland.  Police say 43-year-old March Stephen Sundin was found lying face-down early yesterday morning, across the street from City Hall near Terry Schrunk Plaza.  Investigators believe Sundin was stabbed several blocks from where he was found.  Detectives say they have no description of a suspect.