(Portland, OR)  --  Federal authorities say they've arrested a man accused of using a baseball bat and a knife in a robbery in Southeast Portland.  Sixty-seven-year-old Henry Ross Pryor is charged with first-degree robbery, first-degree burglary, and second-degree assault.  Authorities say a woman was attacked at her home on Southeast 139th Avenue on June 19th.  Pryor is accused of hitting the woman several times with the bat and trying to stab her.