KIEV, June 21 – One of the leading U.S. law firms Covington&Burling LLP and one of the largest audit companies in the world BDO will draw up a report on a gas case against Yulia Tymoshenko, Tymoshenko's defense lawyer Serhiy Vlasenko has said.

"Now they're studying the gas case against Tymoshenko and we're waiting for their conclusions in the near term," he said a press conference on Monday.

Vlasenko said that the companies have presented their conclusions on criminal cases opened against Tymoshenko on Kyoto money and ambulances.