Czech's hesitant on Lisbon Treaty.

Czech President Vaclav Klaus said that he was adamant the Irish voters will reject the European Union's Lisbon treaty. That would mean that as a fierce Euro sceptic he would not have to sign the reform pact.

The upper and lower houses of Czech parliament have approved the treaty but the Czech President has been hesitant to sign it. French President Sarkozy warned of Klaus' footdragging last week.

Heading the Czech delegation in the UN General Assembly in New York, Václav Klaus is spoke to international reporters about the Lisbon agreement. When asked how long he planned to wait, he gave a somewhat unclear answer.

"I don't have anything to say about that but I think the Lisbon agreement will be rejected by the Irish referendum, so I'm not worried about it. You shouldn't worry about it either," he told the journalists.

Klaus then declined to say what he would do if Irish voters approved the Lisbon treaty. Moreover, some Czech senators are poised to file a complaint with the Constitutional Court. That could mean further delay.

The the 27-member bloc was plunged into disarray last year when the Irish said No to the treaty. If the Lisbon treaty fails to win the backing of Irish voters again, it could kill the pact.

German President Horst Koehler signed the treaty on Wednesday.

On Wednesday, it was revealed that British Conservative Party leader David Cameron sent a letter to Klaus assuring him that the Conservatives would call a referendum on the Lisbon treaty after their expected election victory if Klaus delayed its signing on behalf of Prague.