'No one else involved' in Qld dam deaths

The deaths of a man and woman found in a Queensland dam are not suspicious, police say. (AAP)

The deaths of a man and an unknown woman found floating chained together in a dam in Queensland's South Burnett region five days ago were not believed to be suspicious, police say.

The bodies of a man, identified as Darryl Smith, and a woman in her early 40s were found by a member of the public at the Gordonbrook Dam, about 250km northwest of Brisbane, on Saturday afternoon.