Police are seeking information for the whereabouts of a 44-year-old man.
Laurie John Junior Dodd escaped legal custody while at Royal Perth Hospital around 12.40pm on Saturday.
He is described as 187cm tall with a medium build, fair skinned and black hair in a mullet style.
Mr Dodd was last seen wearing green or black boxer shorts and a white t-shirt.
It is believed he may have facial and arm injuries that may be bandaged.
He was last seen in the Perth CBD area.
Members of the public are advised not to approach him but should contact police immediately on 131 444.
Fresh new look for Roger May Machinery Museum
Tragic end to search of missing FIFO worker
Accused arsonist charged over Bertram fires
Bondi Beach Statement
Police issue 31,000 driving infringements in first month of new AI cameras
Works underway on Rockingham and Safety Bay High School redevelopments
New measles exposure sites revealed in Bunbury
Dawesville man charged after allegedly leaving his elderly Great Dane to suffer painful conditions
Good Samaritan sought by police after helping teen during robbery in Baldivis