Serhiy Vlasenko told reporters Monday that he stands accused of car theft, robbery and failing to obey a court ruling stemming from his divorce several years ago.
Vlasenko dismissed all the accusations as a campaign by Tymoshenko's long-time political foe, President Viktor Yanukovych, to lock him in jail and leave Tymoshenko without a defense.
Last week, Ukrainian authorities stepped up their legal campaign against Tymoshenko, accusing her of organizing the murder of a businessman nearly 20 years ago.
Tymoshenko is serving a seven-year prison term on charges of abuse of office, a sentence that has been condemned by the West as politically motivated.
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