Internet companies have been summoned by the British government to explain how they might curb access to child pornography material.
Parents of murdered children April Jones and Tia Sharp have have called for immediate action on this issue.
The government says The Internet Watch foundation will be the centre of a campgain to eradicate child porn images. It will issue blacklists for internet service providers to block.
But questions are being asked as to whether enough is being done.

