KIEV, Ukraine (AP) — A U.S. law firm hired by the Ukrainian government has concluded that the trial of former prime minister Yulia Tymoshenko was rife with problems including violating her right to defense and unfairly imprisoning her before she was convicted.

However, the report by the New York-based firm Skadden, Arps, Slate, Meagher & Flom — commissioned by the Ukrainian Justice Ministry and released on Thursday — dismissed Tymoshenko’s allegations of being prosecuted on political grounds.