North Korea's propaganda campaign has surged into the 21st century with a new Twitter account, hot on the heels of its foray into video with clips posted on YouTube.

The secretive regime has begun micro-blogging under the name uriminzok, with several posts pointing its few dozen followers to anti-Seoul and anti-US statements on the country's official website (http://www.uriminzokkiri.com).

South Korea blocks the site and few in North Korea have access even to a computer.

One twitter posting dimissed accusations that a North Korean torpedo sank a South Korean warship in March. Another criticised US-led sanctions on North Korea and Iran.

Most followers posted derisive comments in Korean.