About 10,000 Czechs rallied against President Milos Zeman in central Prague, calling for his removal from office for what they say are pro-Russian views that have no place in a European Union nation.

The protesters, who wore face masks and followed social distancing rules, spread out through central Wenceslas Square in Prague. Other rallies were held in dozens of towns and cities across the country.

They called on the Czech Parliament’s upper house, the Senate, to bring treason charges against Zeman. They said his recent comments sided with Russia and cast doubt on the findings of the country’s security and intelligence services about the 2014 blast, calling him “a servant of Kremlin” and a “security risk” for the country.

The Senate already announced that such a move is being considered.