MOSCOW, November 12. /TASS/. US tech giants Facebook and Twitter are expected to send delegations to Russia in early December to discuss the country’s new legislation with media watchdog Roscomnadzor, a source familiar with the plans said on Wednesday.

Twitter Vice President Colin Crowell and Facebook's Thomas Myrup Kristensen, director for public policy for Nordics, Central and Eastern Europe and Russia are due to arrive.

“The agenda for the meeting has not been approved, but most likely the sides will discuss the law obliging to store data of Russians on servers in Russia and implementation of the law on bloggers,” the source said.

Crowell already met with Roscomnadzor in June 2014. In August, a delegation from Facebook arrived in Russia for talks with the representatives of Russia’s upper house, the Federation Council.

Russia’s new law requiring foreign Internet companies to store the personal data of users from Russia within the country's borders is likely to come into force in 2016.

None of Internet companies opposed Russia’s new personal-data measures, but there are still certain questions connected with bringing data centers to Russia and providing them with security systems.

Roscomnadzor notified Internet services Facebook, Gmail and Twitter in late September about the necessity to be registered in Russia as “organizers of information distribution.”

Russian lawmakers passed the legislation in July and gave preliminary approval in September to speed up its implementation by more than a year, citing security concerns and increasing pressure from foreign nations provoked by the ongoing crisis in Ukraine.

President Vladimir Putin signed a law in May obliging bloggers, whose Internet pages are daily visited by more than 3,000 users, to comply with requirements applicable to the mass media.