KIEV, May 23 - RAPSI. Former Ukrainian Prime Minister Yulia Tymoshenko has filed documents with the European Court of Human Rights supplementing her 2011 complaint on the violation of her right to a fair trial, her attorney Serhiy Vlasenko told RIA Novosti.

After the Supreme Specialized Court rescheduled the hearing of Tymoshenko's appeal against her sentence in the notorious “gas case” from May 15 to June 26, her lawyers declared their intent to appeal to the Starsbourg court without waiting for the judgment.

According to Vlasenko, the defense sees no need to file a new complaint with the European court and simply supplemented the application lodged on August 11, 2011 after her arrest.

In the application, Tymoshenko maintains that she has been prosecuted on political grounds, the validity of her stay in a pretrial detention center has never been verified by the authorities, her custodial conditions were inadequate and she did not receive treatment despite her poor health.

In October, the Pechersk District Court in Kiev sentenced Tymoshenko to seven years in prison for abuse of power in signing gas supply contracts with Russia in 2009. She contested the sentence in an appeals court, which upheld the judgment. She then filed a cassation appeal.