(Portland, OR)  --  Six people accused of perpetrating a "mob-style" robbery at an AT&T store in West Linn are in police custody.  Authorities say following the robbery yesterday, the four males and two females fled the store and piled into a vehicle, which took off but later crashed near Riverdale High School in Portland.  Police say the six fled the vehicle, but three were caught immediately and the other three were rounded up later.  Officials say the suspects include four men in their 20s and two juvenile girls.