It’s been 10 days since 81-year-old John Chesley wandered away from his Oroville home and never came back.
The ground search was called off last week, but rescuers are still trying to find him.
Rescuers have been trying hard to find Chesley but still no clues have surfaced.
Sheriff Deputies said it's possible Chesley might have been picked up by someone.
He suffers from dementia and rescuers said he might have asked someone to take him to see his family.
They said Chesley has a brother that lives in Bozeman, Montana and had two sisters who passed away in Shelton, Washington. He also has family that lives in the Bay Area. Rescuers believe he might be heading to those places.
“The areas in where he was last seen, we are surprised that we haven't found any clues in a direction in where he might have gone,” said Sergeant Steve Collins of the Butte County Sheriff’s Department.
Rescuers said they will meet Thursday to discuss which areas to search, but so far no date has been set when rescuers will start looking again.
Chesley is described as a white man standing five-foot-eight-inches tall and weighing 140 pounds with brown eyes and short gray hair.
He was last seen in a blue flannel shirt, jeans and white shoes.
Anyone with information on his whereabouts is asked to call the Butte County Sheriff's Office at 530-538-7321.
Due to Chesley's mental state, rescuers said if you happen to see him, he might come off as aggressive.
They advise if you see him to ask if he would like to see is wife, Marcie.