(Portland, OR)  --  A man accused of murdering his aunt in Gresham is in police custody.  Officials say 36-year-old Teddy Stivahtis Jr. was arrested yesterday at the Fred Meyer in Portland's Burlingame neighborhood.  Stivahtis is accused of fatally stabbing his aunt, Deanna Stivahtis, on October 10th in Gresham.  He's also accused of robbing two Portland-area banks.