(Gresham, OR)  --  Police in Gresham say they're still looking for a suspect accused of attacking someone with a knife on a MAX platform last week.  Police say the suspect slashed someone at the East 162nd Avenue MAX station Friday evening.  Authorities say the man was fighting with a group of people on a westbound train stopped at the station.  When the fight spilled out onto the platform, the man allegedly slashed one person in the group in the shoulder before returning to the train.  Anyone with information is urged to contact police.