ROSEBURG, Ore. (AP) -- Searchers in Douglas County have spent two days seeking a missing volunteer from the Cycle Oregon bicycle tour.
The Portland man, 54-year-old Mark Bosworth, was last reported seen late Friday in Riddle, south of Roseburg.
Authorities say he may be suffering from a medical condition and be confused about where he is.
On Sunday, the sheriff's department reports, about 40 people joined in the search, using dogs. The searchers reported finding no new information or evidence.
The sheriff's office said Monday the search has resumed and investigators are looking into a report Bosworth may have hitchhiked a ride.
The seven-day bicycle tour ended Saturday.