(Portland, OR)  --  Police are searching for a man accused of robbing people at gunpoint outside of grocery stores in the Gresham area.  Police say the suspect has pointed guns at at least two victims and demanded either money or their purse in the last week.  The first incident happened last week at a grocery store along Southeast Burnside Street when the suspect allegedly demanded money from a man leaving the store.  The second incident happened midday Monday at a store about two miles away, where the suspect demanded a purse from a woman, who refused.  The suspect then allegedly fled.  Anyone with information is urged to contact police.