The Sheriff’s Department is asking for the public’s help in finding a critical missing person with Alzheimer’s Disease. Oscar Nava is 75 years old, 6 feet tall, 160 #, gray hair, gray beard, and was wearing a blue baseball hat, blue jeans, brown work boots, gray shirt, and a green jacket. He was last seen walking westbound on Highway 62 from Kickapoo Trail toward Morongo Valley. His wallet was found Sunday morning at Samel Drive in Morongo Valley. Anyone with information on Mr Nava’s whereabouts is asked to call the Sheriff’s Department at 760-366-4175.