Thailand's government has shut down a popular political online chat room just days after YouTube was blocked for videos deemed insulting to the king.
The political page of Pantip.com said in a notice on Sunday it was closed for national security reasons at the request of the information communication and technology (ICT) ministry.
"ICT has asked for temporary closure of Rajadamneon Room after it found several topics that might endanger national security," the site said.
"The page is suspended. We would like to ask members to not post political messages in other rooms, otherwise the entire site will be closed."
Pantip is the most popular chat room in Thailand and the political pages often feature feisty debate about democracy, the military junta and the legitimacy of the coup that brought them to power last year.
Crackdown
The ICT's move comes just days after they banned popular video-sharing website YouTube because of clips considered offensive to the nation's revered King Bhumibol Adulyadej.
Since coming to power, the military have blacked out international news broadcasts, seized a private television station and blocked political websites.
Thailand has blocked some 45,000 websites, the group Freedom Against Censorship Thailand have said.
Most are pornographic but the government also targets sites critical of the king or supportive of Thaksin Shinawatra, the deposed prime minister.
Pantip users had recently been debating the censorship of YouTube, although it was not clear if this was the reason it was censored. The ICT were not immediately available for comment.