A man who allegedly posed as Justin Beiber online to get "explicit images" of young children has been charged with more than 900 child sex offences.
Taskforce Argos detectives charged a 42-year-old man this week with more than 931 child sex offences after police examined the man's computer as part of an ongoing investigation.
Police said the man posed as the popular singer on platforms such as Facebook and Skype to communicate with his victims.
It is alleged the offences date back to at least 2007.
His charges relate to a number of child sex offences including rape, indecent treatment of children, possessing and making child exploitation material and using a carriage service to groom persons under 16.
Detective Inspector Jon Rouse urged Justin Bieber fans and their parents to be "extra vigilant" when using the internet.
"The fact that so many children could believe that they were communicating with this particular celebrity highlights the need for a serious rethink about the way that we as a society educate our children about online safety," he said.
"The breadth of offences committed in this instance are frankly horrendous and I want to recognise the efforts and commitment of the investigative team at Taskforce Argos to keeping children safe."
Justin Bieber will be performing in Brisbane at Suncorp Stadium on Monday.