Vacant properties around Cleve on South Australia's Eyre Peninsula are the focus of a search for a man missing for more than a week.
Daryl Norris, 59, was last seen at his Cleve home on February 4.
Police believe Mr Norris left on foot with some food supplies but without any personal items such as a mobile phone or wallet.
There have been no confirmed sightings of Mr Norris and it is possible he could have fallen and injured himself, and now need medical attention.
"We are determined to do everything possible to locate Mr Norris and return him to his family," Inspector Mark Hubbard said.
"We have committed substantial resources to this search in the hope of finding him."