Blaser said the arrests were in relation to recent incidents, including blockades and a violent confrontation with local police, which saw the officers slightly injured.
The incidents took place during a recent visit in
During his visit, Estrosi had warned that the French government would no longer tolerate blockades such as those organised by
The French minister also lashed out at the then French High Commissioner, Michel Mathieu, for not authorising the French police to intervene in union-generated conflicts and blockades, even when a Court warrant had been issued.
As a result, Mathieu resigned last month.
In response, USTKE on Monday has condemned what it regards as exaggerated force towards its members and what it calls the ongoing "criminalisation of the exercise of union rights".
The union has called on yet another general strike, on Wednesday this week, in protest against the arrests.
The string of events also coincides with the formal announcement, at the weekend, of USTKE's political wing, a new party in