West Australian police have been searching for Michael Junior Huria (23), who went missing on Monday in what relatives have said might be a spiritual journey.
Police received information about 3.30pm on Sunday that a body had been found in the Walyunga National Park, close to Ellenbrook where Mr Huria went missing.
Police said today they believed the body was Mr Huria's.
''Coronial and forensic officers will attend the scene this morning to conduct further enquiries,'' a spokeswoman said.
Mr Huria, who also goes by the surname Sullivan, hasn't been in touch with family or friends since leaving his Ellenbrook home after 4am on Monday last week.
"We don't know but we think he might have gone out on a spiritual journey of some kind - he's quite inclined in that way."
A woman has told police she might have struck a pedestrian in the area last Monday night.