This is reported by TASS with reference to the police.
It is noted that the conflict occurred at the end of the rally in support of the decision of the Czech authorities to expel 18 Russian diplomats from the country.
One of the protesters was detained.
Earlier it was reported that the Czech Republic had notified Russia of the expulsion of 18 Russian diplomats from the country.
Later, the media reported that Czech Prime Minister Andrei Babis said that Prague suspected Russian special services of involvement in the explosion at an ammunition depot in Vrbetica in 2014.