MOSCOW, April 3 (RIA Novosti) - Moscow police have released 30 members of pro-Kremlin youth movements, who were arrested during protests against Georgia and Ukraine's admission to NATO on Thursday, a police source said.

The source said the event was sanctioned by the Moscow authorities, but a group of young people with banners, who blocked traffic, were arrested.

"The young people have been released. The misdemeanor files have been compiled and sent to the magistrate court," the source said.

Some 200 activists of pro-Kremlin Rossiya Molodaya (Young Russia), Molodaya Gvardia (Young Guard) and Novye Lyudi (New People) gathered in downtown Moscow on Thursday to protest against the possible NATO eastern expansion and admission of Ukraine and Georgia.