(Beaverton, OR)  --  Police are looking for a man who grabbed a 16-year-old girl off a Beaverton Street yesterday and tried to force her into his car.  The teen says she was walking on Erickson Avenue near Allen Boulevard at about 1 p.m. when the man, who was holding a knife, gripped her by the arm and threatened to kill her.  She says he tried to drag her to his car, but was startled by a woman who suddenly walked by and let go. He fled in his car. He's described as a short white man in his 30s with red hair and glasses.  He was wearing gray shorts and a gray hooded sweatshirt.