Ukraine's Supreme Administrative Court on Wednesday suspended the Central Electoral Commission's official announcement that Viktor Yanukovych had won the country's presidential elections pending consideration of a lawsuit.
Prime Minister Yulia Tymoshenko appealed on Tuesday against Yanukovych's victory in the runoff vote on February 7, which she lost by 3.48%.
Ukraine's highest court, which represents Tymoshenko's last chance to overturn the results of the election, is expected to rule on the suit within two days.
The Yulia Tymoshenko Bloc (BYT) will push to cancel Yanukovych's inauguration, First Deputy Prime Minister Oleksandr Turchynov said Wednesday.
The Ukrainian parliament voted on Tuesday to hold Yanukovych's inauguration on February 25.
"Later today, a draft resolution will be submitted to the Supreme Rada from our [BYT] faction deputies revoking the Supreme Rada's decision to conduct the inauguration on February 25," Turchynov said.
Tymoshenko Bloc deputies earlier told a parliament session that because the 2010 budget had not been adopted, there were no funds for the inauguration ceremony.
The prime minister has refused to concede defeat in the runoff vote, accusing her rival's camp of fraud. International monitors said the election was fair and Yanukovych has been congratulated by governments around the world, including Russia and the United States.
The congratulations for Yanukovych were arriving even before the Central Election Commission officially announced the results on Sunday, sending a strong signal to Tymoshenko, a leader of the "orange" street protests that overturned Yanukovych's tainted election victory in 2004.
Yanukovych's Party of Regions, which has urged Tymoshenko to resign as prime minister, dismissed threats to contest the election results as attempts to delay the February 25 presidential inauguration. The party is in talks with other political groups to create a new coalition in the parliament.
KIEV, February 17 (RIA Novosti)