The Turkish president’s ruling party is putting forward draft legislation to parliament that would allow the government to tighten its grip on social media, an official said Tuesday. The opposition fears the legislation will lead to greater censorship in the country.

Turkey's Information & Communication Technologies Authority imposed advertising bans on Twitter, Periscope and Pinterest under a new social media law, according to decisions published in the country's Official Gazette.

On Monday, Facebook joined other companies including YouTube in saying it would be appointing such a representative. The decisions revealed in the Official Gazette said the advertising bans went into effect from Tuesday. Twitter, its live-streaming app Periscope, and image sharing app Pinterest were not immediately available to comment.

The move has caused concern as people turn more to online platforms after Ankara tightened its grip on the country's mainstream media.

In previous months Facebook, YouTube and Twitter had faced fines in Turkey for not complying with the law. Companies that do not follow the law will ultimately have their bandwidth slashed by 90 percent, essentially blocking access.

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