Police and volunteers are conducting a search operation following a marine incident on Wuruma Dam near Eidsvold yesterday evening.
Just before 5pm, a boat flipped throwing four occupants overboard. Two women were unharmed and swam to shore to alert emergency services.
A 30-year-old man and 70-year-old man who were in the boat remain missing.
Specialist police resources, including water police and divers are being assisted by a helicopter and SES personnel as the search operation continues.
There is no further information available at this time.
If you have information for police, contact Policelink on 131 444 or provide information using the online form 24hrs per day.
You can report information about crime anonymously to Crime Stoppers, a registered charity and community volunteer organisation, by calling 1800 333 000 or via crimestoppersqld.com.au 24hrs per day.