(Beaverton, OR)  --  A man accused of picking up a 13-year-old girl and sexually abusing her is facing criminal charges.  Police say 27-year-old Nathan Khingratsaphone of Beaverton picked up the teen in downtown Portland and committed the abuse at his apartment.  The teen reportedly told investigators the suspect offered her marijuana and took her to the apartment.  Khingratsaphone is facing multiple charges.