(Portland, OR)  --  A man arrested on robbery charges last week is being linked to several more gunpoint robbery cases in the area.  The Portland Police Bureau says investigators have linked 46-year-old Deondre Rosemon to at least five other robberies across the Portland area.  Police arrested him late last week on a charge of second-degree robbery for a single incident.  Police say he's expected to face more charges.  Bail has been set at 500-thousand dollars.