The brother of jailed Russian opposition leader Alexei Navalny has been arrested in Moscow.

Oleg Navalny was detained during a series of police raids on the homes and offices of his brother’s friends and family.

The locations included Alexei Navalny’s apartment, where Oleg was detained, and a rented apartment where Mr Navalny’s wife, Yulia, has been living.

Video on the internet TV station Dozhd showed Yulia Navalny telling journalists from the window that police had not allowed her lawyer to enter the apartment.

The raids came four days before protests that Navalny’s supporters have called for Sunday.