A junior doctor from Ashton-under-Lyne has admitted to a long list of a sexual offences against boys, some as young as 12.
Raza Laskar, 32, has confessed to inciting, creating and distributing child pornography and will be sentenced on January 9 2015.
Police uncovered more than 1.2million illegal images from computers found at the doctor’s house as well as hundreds of chat logs and videos of him engaging in sexual acts with a child.
Detective Inspector Theresa Carter, said: “Raja Laskar is a person who lived two very different lives.
“Like Jekyll and Hyde, he is vastly different in moral character depending on the situation, going from caring for and treating children to deliberately targeting, grooming and abusing them.
“He has admitted a vast number of appalling child sexual abuse offences and the size and the scale of this operation obviously came as a shock to the investigation team when you consider his background allied with the scale of his offending.
“His profession will obviously be an aggravating factor and one that many people will be extremely concerned about.
“While I can stress that we found no evidence that he committed any offence during the course of his employment, it will be of absolutely no comfort to the boys and the families of the boys he targeted online.
CONFESSION: Raza Laskar, 32, confessed to inciting, creating and distributing child pornography
The medical professional, who worked in hospitals across greater Manchester, admitted to six counts of causing or inciting child pornography, one count of taking indecent photographs, eight counts of causing or inciting a child to engage in sexual activity.
He also owned up to five counts of voyeurism, three counts of sexual activity with a child, two counts of distributing an indecent photograph of a child and one count of incitment to distribute an indecent photograph of a child.
The 32-year-old confessed to two counts of causing or inciting a child under 13 to engage in sexual activity, two counts of making indecent photographs of a child and one count of possessing an extreme pornographic image.
Laskar was arrested as part of a police operation which targeted men who accessed abuse images online.
Police executed a warrant on his house in May after 1,605 files believed to contain indecent photographs of children were uploaded from an IP address at his home between Christmas Day 2013 and January 2014.
Officers seized and forensically examined a number of computers and data storage found at the property and discovered hundreds of chat logs and videos of Laskar engaging in sexual acts with a child, who he had taken to a hotel room. They also uncovered more than 1.2 million illegal images.
His victims were traced by the investigation team by using their usernames, emails and IP addresses. Some were based in the UK and others elsewhere around the world.
Detective Inspector Carter, said: “The one thing I would like to highlight on the back of this is internet security and awareness.
“It is so important, in this digital age where even young school children have the internet in the palm of their hand that they know about the dark side of the web.
“There are dangers lurking if the right precautions are not taken and I would encourage parents to talk to their children and discuss what websites they are visiting, who they are talking to and what to do if approached by someone who asks them to engage in sexual activity.”