A Moscow court has ruled that Russian opposition leader Alexei Navalny should be jailed for 30 days for staging an unsanctioned rally in Moscow, the AP reports. The anti-corruption rallies called for by Navalny were held in more than 100 Russian towns and cities on Monday. In Moscow, thousands of angry protesters held an unsanctioned rally on Tverskaya, the capital's main street. More than 1,000 people have been arrested across Russia. The judge at the Simonovsky district court ruled after midnight that Navalny should be jailed for repeated violations of the law on public gatherings. Navalny was detained outside his home an hour before the rally was to start. (More Alexei Navalny stories.)