New York Attorney General Andrew Cuomo has notified Comcast Corp. that the state will take legal action against the media company if it doesn't take steps to reduce the availability of child pornography on the Internet.

Cuomo wants Internet providers to remove certain newsgroups that contain child pornography and purge their servers of child pornography Web sites. Newsgroups are essentially online message boards in which users can post text and files in any of thousands of categories.

New York has already reached agreements with several providers but Cuomo accuses Comcast of being unwilling to sign the code of conduct his office created.

Comcast officials did not have any immediate comment but said they were reviewing the attorney general's letter.