(Bethany, OR) -- An 84-year-old man remains hospitalized following a random attack in the Rock Creek community. The Washington County Sheriff's Office says the man was picking berries on West Union Road Friday afternoon when 49-year-old Gregory Bruemmer ran up and "violently shoved" him to the ground. Police say the victim suffered "massive head injuries" and was rushed to a Portland trauma center with life-threatening injuries. Police tracked down and arrested Bruemmer on charges of assault and harassment.