Missing coast guard officer reappears UPI 1/23/2013 3:38:00 PM HONOLULU, Jan. 23 (UPI) -- A U.S. Coast Guard officer who vanished three months ago has suddenly reappeared and is undergoing a medical evaluation, police in Hawaii said. Petty Officer Russell Matthews was the subject of a 10,000 mile, two-day search in October after his car and slippers were found at Kaena Point on the western tip of the island of Oahu, HawaiiNewsNow reported. Honolulu police said Matthews, 36, showed up at his home Sunday night in an incoherent state and was taken to Castle Medical Center in Windward. The next morning Matthews called his Coast Guard commanders and told them he was alive. "We don't know where he's been the past few months," Chief Warrant Officer Gene Maestas said. "There is an ongoing investigation being conducted by the Coast Guard Investigative Service." Matthews has been transferred to Tripler Army Medical Center in Honolulu for evaluation. At the time he disappeared, Matthews was being investigated for illegal drug use.