Australian cycling will have to wait one extra day to learn the results of the independent investigation into its drugs allegations.

A spokesman for investigator Robert Anderson QC said the retired judge would probably finalise his report on Friday, not Thursday.

But Cycling Australia (CA) still plans to announce its Olympic nominations on Friday as planned.

"As he's gone along, he's found he's needed to talk to five extra people," the spokesman for Anderson said.

"It's more than likely that he will now finish the report on Friday."

A CA spokesperson said the body was aware of the development.

"We're still planning on Friday afternoon, but it could be late Friday," she said of the nominations.

Under selection guidelines, CA must wait a week to allow any unsuccessful cyclists to appeal their non-selections, then submit the nominations to the Australian Olympic Committee (AOC) on July 9.

The AOC, which banned suspended cyclist Mark French from the Games for life earlier this month, has said it will not pick riders unless it is satisfied they are clean.

It is one of several key sporting bodies anxiously awaiting Anderson's findings.

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