France has ruled out negotiating any deal with Google on back taxes.
Dozens of French police raided Google's Paris headquarters on Tuesday, escalating an investigation on suspicions of tax evasion.
Investigators also searched McDonald's French headquarters on May 18 in another tax probe.
Google, McDonald's and other multinational firms such as Starbucks are under increasing pressure in Europe from public opinion and governments angry at the way businesses exploit their presence around the world to minimise the tax they pay.
Google said it is fully complying with French law; McDonald's declined to comment.
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