Russia's state investigative body said yesterday that it was looking into a Russian media report alleging that sabotage experts from Britain's SAS special forces have been deployed to western Ukraine.<br />''<br />''Russia's RIA Novosti news agency quoted a Russian security source saying about 20 SAS members had been sent to the Lviv region.<br />'' UK's  Special Air Service is an elite military force trained to conduct special operations, surveillance and counter-terrorism.<br />''<br />''In a statement, the Investigative Committee said, it would follow up the report that they had been sent in to assist the Ukrainian special services in organizing sabotage on the territory of Ukraine.<br />''<br />''The British Ministry of Defence had no immediate comment on the Russian investigation.<br />''<br />''<span style="color: #222222;">Earlier, Britain said, it sent military trainers to Ukraine earlier this year to instruct local forces in using anti-tank weapons. Meanwhile, the British government said a week before Russia's military operations that it had pulled out all troops except those needed to protect its ambassador.</span><br />