Russian prosecutors have cleared PwC in Russia of any wrongdoing in auditing Yukos, the bankrupt Russian oil group, PwC said yesterday.

The firm has revealed it had received a letter from the prosecutors office saying they had found no wrongdoing in PwC’s audits, the Financial Times reports.

The news will be a boost to the audit firm nearly four weeks after it said it was withdrawing a decade of Yukos audits.

‘We are pleased ... the general prosecutor ... has decided not to take any action against PwC Russia, its partners or employees,’ the firm said.

The letter, which was produced as evidence during court hearings in a law suit filed by the Russian tax service against PwC, is likely to help the audit firm in its defence against claims it colluded with Yukos in producing false accounts between 2002 and 2004 – a potential threat to its audit licence in Russia.