Russia carries out checks at seven companies over contaminated oil - Ifax

Russia's technical standards watchdog is carrying out checks at seven companies following the contamination of oil in the Druzhba pipeline last month, Interfax news agency cited the watchdog as saying on Thursday.

Rostekhnadzor, the watchdog, did not identify the companies in question, but said the checks would be completed by the end of May. (Reporting by Maxim Rodionov and Maria Kiselyova; writing by Tom Balmforth; editing by Dale Hudson)