January 23, 2013, 7:38 amThe Washington County Sheriff's Office is asking for your help finding a 69 year old man with dementia who walked away from his adult care home in Cedar Hills Tuesday afternoon. Brant William Koller is unable to speak and may not respond to his name. He is 6'5'', weighs about 210 pounds has grey hair and usually wears glasses. He was last seen wearing a purple turtleneck, blue denim overalls and black shoes. He was not dressed for the cold weather overnight. Tri Met has been notified and area hospitals are on the look out for him. A phone notification was also sent out in a five mile radius around Koller's adult care home on SW Roxbury. Deputies ask you to call 9-1-1 if you know his current location or the non emergency number (503-629-0111) if you saw him sometime after 3:30 Tuesday afternoon when he walked away.