Yevhenia Tymoshenko and Sean Carr met at a Red Sea resort
Authorities in Ukraine are investigating allegations that the daugher of Prime Minister Yulia Tymoshenko was assaulted by police.
The alleged incident took place last week at a Black Sea resort, where Yevhenia was staying with her husband.
Yevhenia and her partner, British musician Sean Carr, say they were beaten by police on a beach in Odessa.
Media reports had suggested the pair attacked the police first - but now the interior ministry denies that.
Ms Tymoshenko and her husband were reportedly with a group of biker friends and tried to enter a restricted area of the beach when the fight broke out.
Two policemen were detained as a result of the scuffle and a preliminary investigation is reported to blame them for using force without reason and exceeding their authority.
Prime Minister Yulia Tymoshenko was a leading figure in the Orange Revolution in Ukraine in 2004 and is tipped as a likely contender for the presidency in the future.