In a major crackdown on child porn, the Australian police have arrested 31 persons across the country.
The online child sex exploitation team had tracked them for six months, the Australian Federal Police (AFP) announced Wednesday.
More than one million images were seized during Operation Irenic including pictures of infants and young teenagers involved in sexual acts.
A former NSW police officer is among those arrested in two Australia-wide police operations.
The ex-policeman had been previously arrested in a 2004 pornography sting and had just completed a good behaviour bond.
Police are sifting through more than the photographs and videos seized.
"The images that our officers view and that we seize are not images of children in sexual poses. These are images of children getting raped and abused and tortured," the acting national manager of high tech crime operations, Kevin Zuccato, said.
He said the victims, ranging from infants to teenagers, were Caucasian and Asian in appearance and their nationalities were yet to be determined.
The men arrested for downloading the images were aged between 30 and 70 and were from various sectors and no direct links had been found between them.
"We see individuals who come from all walks of life and that is what is particularly troubling about these types of offences. It is very difficult to categorise them," Zuccato said.
He said a forensic psychologist, a television station worker, teachers, an animal welfare activist and a 70-year-old retiree were among the arrested. Some were known to police for child sex exploitation offences.