MOSCOW (Reuters) - Russia's government has no objections to Rosneft's deal to buy TNK-BP on anti-trust grounds, Interfax reported the country's economy Minister Andrei Belousov saying on Tuesday.

Rosneft on Monday tightened its grip on Russia's oil industry with a $55 billion deal to buy TNK-BP that also makes Britain's BP a one-fifth shareholder in the state-controlled company.

(Reporting By Megan Davies; editing by Melissa Akin)