Viktor Yanukovych's campaign manager said Wednesday that they would delay filing their complaints to the Supreme Court, aimed at challenging Viktor Yushchenko's victory in the Dec. 26 re-run off for the presidency.

"We will file the complaint within a few days," Yanukovych's campaign manager Taras Chornovyl said, adding that according to law the complaint must be filed by Tuesday.

Yushchenko was declared by Ukraine's Central Election Commission the official winner of the rerun for the presidency, with 51.99 percent of the votes against 44.20 percent for Yanukovych. But Yanukovych has refused to concede defeat.

Yanukovych's allies had previously said they would file a complaint to the Supreme Court by 02:00 p.m. (1200 GMT) Wednesday.

Yanukovych claimed Tuesday that there was widespread fraud in the Dec. 26 vote and he would demand "the annulment of the so-called rerun."

Hundreds of Yanukovych backers rallied Wednesday in his hometown of Donetsk and chanted anti-Yushchenko slogans.

Earlier on Tuesday Yanukovych said that if his appeal to the Supreme Court is unsuccessful, he will take the fight to the European Court of Human Rights.

The final results must be approved by the Supreme Court and published in two official newspapers before Yushchenko can be inaugurated, leaving the Yanukovych's campaign some time to file appeals.