"It is not within our authority. Let the prosecutors and investigators do their job," he said.
Despite their second ballot papers being fraudulent, the IEC would still count it as a valid vote.
"How will we be able to isolate the fraudulent ballot from the others when it is a secret vote?" Mosery said.
He admitted that if the scanner updated the voting roll as soon as an ID was scanned, it would have prevented duplicated voting.
"But it was never designed to be live. It's mechanics were never planned around a live voters roll," he said.