Dalzell said the death was initially being investigated as "unexplained".
Initially it was suspected that the deceased was a local man whose family had reported him missing on Monday.
"Quite understandably his family were extremely concerned when the body was found on Tuesday, fearing that it might have been him," he said.
Initial identification had discounted that, however, and the "missing" man had subsequently been located.
Scene guards that had been in place since the body was discovered have now been lifted.
Extracting the body from the river had not been quick or easy, however, requiring specialist assistance and an inflatable boat from Far North Surf Rescue.
"It took a bit of time, but eventually we were able to tell the first family that the body was not that of their loved one," Dalzell said.
The body was removed late on Tuesday afternoon.
Meanwhile, Dalzell understood that the children who found the body were none the worse for their experience, but would be referred to Victim Support if they wished to avail themselves of that assistance.