A man is believed to be missing in the Baldivis area.
66-year-old Kevin Organ is feared missing after last being seen at around 9pm on Sunday night.
Mr Organ suffers from Alzheimer's and his family members say he was not wearing any shoes.
He does not have a mobile with him and has not used any of his credit cards.
He is believed to have his wallet on him with limited cash.
Any information or sightings should be reported to police by calling 131 444 immediately.