Hundreds of people have been detained in Russia on the day of a “revolution” announced by a popular nationalist blogger.

Moscow police said they had detained 263 participants of an unauthorised rally on Sunday. OVD Info, a group that monitors arrests, later said at least 376 people had been detained in Moscow and 36 in other cities.

On Sunday afternoon, riot police had begun searching people near the Kremlin and putting many of them into police vans, although none of them were shouting slogans or holding signs. State news agency TASS reported that authorities had confiscated guns, knives, brass knuckles and clubs from some of those detained.

Photographs and video shared on social media showed that many of those arrested were teenagers and 20-somethings. One was seen playing Pokemon Go in a police van.