A HACKER who claims to be part of the Anonymous network posted a message on The Straits Times blog website on Friday morning, days after a video threatening to hit out at the Government was posted on YouTube.

The hacker said the attack was prompted by a "misleading" report the paper published on its website, and demanded an apology or the resignation of the journalist who wrote it,threatening further attacks otherwise.

A spokesman for Singapore Press Holdings, which publishes the ST and its websites, said the paper stands by its reports and reporters.

The affected blog site has been taken down for now, SPH added. "We have filed a police report on the incident, and the police are investigating the matter."

Government agencies were put on alert after the video posted on Youtube on Tuesday threatened to unleash a "war" on government websites unless it reconsidered regulations requiring the registration of news sites, which were introduced in June.