Russia will block Twitter in a month unless the social media giant complies with a demand to remove banned content, Russian news agencies said on Tuesday, citing a senior regulatory official.

Moscow slowed Twitter down inside Russia last week in retaliation for removing a type of content banned by the government.

Moscow said last week that it had slowed Twitter down inside Russia in retaliation for what it described as a failure to remove a specific list of prohibited content.

Twitter said at the time that it was concerned about the impact on freedom of expression of the Russian action and denied that it allowed its platform to be used to promote illegal behavior as alleged by the Russian authorities.

In a move escalating the escalating standoff, Vadim Subbotin, deputy head of Roskomnadzor, the communications watchdog, was quoted on Tuesday as saying that Twitter had yet to address Russian concerns and that it would be blocked in Russia in a month unless did it.

“Twitter is not responding to our requests as it should. If the situation continues, it will be blocked in a month without a court order,” the Interfax news agency quoted Subbotin as saying.

He added that Twitter could still avoid being blocked if it took steps to remove prohibited content, which according to Moscow includes child pornography and material on illegal drugs and child suicide.

Twitter did not immediately respond to a request for comment.