(Portland, OR) -- An investigation is underway after a woman claims she was grabbed by a naked man while jogging along the Springwater Corridor in Portland. Police say the woman reported she had been jogging near Johnson Creek Boulevard and Brookside Drive yesterday morning when a man on a bicycle passed her and jumped into the bushes. When she approached the area, she said the man emerged from the bushes naked and grabbed her. She managed to get away. The suspect is described as white, in his thirties, about five-foot-eight in height, with a shaved head. Anyone with any information should call Portland Police.