Police said they were unable to determine how many of the images were duplicates.
Court documents reveal Brierley, 84, was asked at the airport if he had anything to say. I reckon they re all, they are perfectly OK, he said.
He also told officers the images were freely available on the internet and had been approved by various bodies .
Those pictures depicted children as young as four in sexualised poses.
Brierley told police he looked at them for recreation and because he found them interesting but denied it was for a sexual purpose .
Officers also found written stories which related to the rape of children which he admitted to reading.
Senior Constable Mark Follington, 61, has been found guilty of tampering with evidence after violently and unlawfully arresting Sydney woman Anya Bradford in May 2019.
Hugo Ball, 23, was arrested by Sydney police, following an investigation into an alleged act of stealing - just months after he was allegedly stabbed by his own mother.