Swiss law requires foreigners to spend at least six months in Switzerland if they want their residence to be officially recognized for income tax reasons.
A radio programme on RTS on Thursday highlighted evidence gathered by reporters who have been tracking the 70-year-old rocker for more than two years.
The singer and his wife Laeticia are very active on social media and their postings of photos of themselves and their family have left an electronic trail indicating very precisely where they have been, the program said.
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