Brad Mehldau, who heads the Brad Mehldau Trio jazz group, cancelled his show scheduled for September 8 at the Siam Paragon because of trepidation over "a destabilising and unpredictable atmosphere in the country," said AMI Events, the organiser.

"Their decision is based on news reports regarding the recent assassination attempt on Thailand's PM," said the company in a press statement.

Last Thursday police foiled an alleged attempt to blow up Thaksin with with a car bomb.

The alleged assassination attempt has been greeted with a great deal of skepticism by the Thai press and Bangkok denizens, nearly 50 per cent of whom, according to opinion polls, believe the bomb attempt was a set-up designed to improve Thaksin's dwindling popularity as his Thai Rak Thai Party gears up for a general election planned on October 15.