Armoured units of the Thai military blocked the area around Prime Minister Thaksin Shinawatra's offices with tanks, witnesses said today.
Rumours of a military coup swept the Thai capital after an army-owned television station suspended regular programming and played patriotic songs.
On a government-owned TV station, Thaksin - now abroad on a visit to New York - declared a state of emergency.
Newley Purnell is posting lots of news. He emails that he's in Kuala Lumpur right now but will be heading to Thailand shortly.
UPDATE: More from Paul Lukacs. Excerpt: "The city of Chiang Mai, in the north, appears unaffected. I am in an internet cafe surrounded by the usual complement of teenagers playing video games. I don't think most of them know."
ANOTHER UPDATE: Much more in this roundup from Pajamas Media.
