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Russian officials have responded by accusing the ex-mayor of '"limitless corruption" during his 18 years in office.

Last week Russian prosecutors demanded that Mr Luzhkov appear for questioning as a witness in a criminal case relating to deals conducted by the Bank of Moscow, which was part-owned by the city's government during Luzhkov's term in office.

The bank's director, Andrei Borodin, has fled Russia and currently lives in London.

The investigation also concerns business interests of Mr Luzhkov's wife, Elena Baturina.

She was once Russia's richest woman, but has sold her construction companies and has left the country.

The former mayor, currently travelling outside Russia, has been rumoured to be seeking a permanent move abroad. Both he and his wife deny the allegations of corruption.

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She was once Russia's richest woman, but has sold her construction companies and has left the country.

Please look at the red colored 'has' in the above.

I think it is unnecessary.

The following is fine.

She was once Russia's richest woman, but has sold her construction companies and left the country.

What do you think?
Comments  
It is unnecessary, but not incorrect. The sentence is correct either way.