The Audit Chamber has confirmed that the Federal Treasury transferred $5.3 billion to a state-owned bank on Dec. 30, 2004, the same day that state-owned oil major Rosneft bought rival Yukos' main production unit, the business daily Vedomosti reported Monday. The report is a further indication that Rosneft may have dipped into state coffers to buy the Yuganskneftgaz, the Yukos unit auctioned off to recover a towering tax debt.