Police divers have joined the search for a swimmer who went missing in a river in Far North Queensland.
The 54-year-old tourist was last seen in distress at Mossman Gorge about 2pm on Friday.
The woman had been visiting the popular tourist spot with friends and was swept downstream in the Mossman River.
Specialist police, SES and other emergency services remain on scene as the search enters its fourth day.
Mossman Gorge remains closed until further notice.
The river is known to be dangerous due to strong undercurrents and is prone to rising fast without warning.