Local Facebook users risk violating the computer law unknowingly by pressing the "like" or "share" button included with posted comment on anti-monarchy messages on the most popular social networking site, Information and Communication Technology Minister Anudith Nakornthap said on Thursday. Anyone doing so could be arrested on charges of violating the Computer Crime Act and committing lese majeste because the law prohibits the dissemination of content deemed insulting to the monarchy, he said. Facebook users should not press the ``like'' button or post comments on lese majeste-related content. They would then become involved with the group's network. This may allow anarchists to use their personal information to create a fake Facebook account to support their cause. Mr Anudith urged the users to press the "delete'' button if they receive messages defamatory to the revered institution, to avoid breaking the law. ''Any user not deleting it may risk beiing prosecuted under the Computer Crime Act, because they will be seen as having a role in indirectly disseminating an unlawful message,'' he said.