Hundreds of people have been detained at a Moscow rally demanding punishment for police who detained an anti-corruption journalist.

Officers in riot gear clashed with protesters during the unauthorised march in support of Ivan Golunov.

Among those detained at the rally were journalists and Russian opposition leader Alexei Navalny.

Mr Golunov was freed on Tuesday after drug-dealing charges against him were dropped following a public outcry.

Interior Minister Vladimir Kolokotsev said officers who had taken part in his detention would be suspended during an investigation.

Three major Russian newspapers had earlier rallied round the freelance journalist in a rare public show of support.