Bangkok to consult with Asean on next move

Thai Foreign Minister Kasit Piromya said "We are well aware that the trial was done in line with Burma's legal process. However the case has drawn attention from the world communities," he said.

The ministry will wait for full verdict of the trial from the Thai embassy in Rangoon which will take about one or two days.

Suu Kyi, 64, was found guilty of breaking the terms of her detention by allowing a US national to swim into her lakeside compound-cum-prison on May 3.

The 18-month sentence means the opposition leader will still be under house arrest when Burma's general election is due to take place next spring.

Meanwhile European Union criticised the trial as "unjustified" while England branded as "sham trial."

The European Union said Tuesday it would stiffen its sanctions against the Burmese regime following the "unjustified" sentencing of pro-democracy leader Aung San Suu Kyi.

"The European Union condemns the verdict against Daw Aung San Suu Kyi, leader of the National League for Democracy and Nobel Peace Prize Laureate, and the unjustified trial against her," the EU's Swedish presidency said in a statement issued on behalf of the bloc's 27 member states.

"The EU will respond with additional targeted measures against those responsible for the verdict. In addition, the EU will further reinforce its restrictive measures targeting the regime of Burma/Myanmar, including its economic interests," the statement said.

The EU's current sanctions, which were recently extended until April 2010, target some 500 regime figures and their families, as well as some 80 businesses linked to the regime.

In London, British Prime Minister Gordon Brown said Tuesday he was "saddened and angry" at the conviction of Suu Kyi.

Brown said he was "saddened and angry" at the conviction following a "sham trial."

In a strongly worded statement, he said the sentence was proof that the ruling military junta was "determined to act with total disregard for accepted standards of the rule of law."

The elections, planned in Burma for 2010, would have "no credibility or legitimacy" without the participation of Suu Kyi, described by Brown as a "beacon of hope." 

Brown said he would write Tuesday to all members of the UN security council to impose a worldwide ban on the sale of arms to the regime.