In a significant development that spells fresh bout of legal trouble for social media companies, Russian authorities are suing have launched a complaint against five social media platforms for allegedly failing to delete posts urging children to take part in illegal protests.

Russian authorities have filed cases against Facebook, Twitter, Google, Telegram and Tiktok for violating its social media rules. While Twitter, Google and Facebook have three cases filed against them, with each violation punishable by a fine of up to $54,000 (4 million roubles).

Russian authorities filed the complaints following nationwide protests over last month’s jailing of Alexei Navalny, who is a prominent critic of Russian President Vladimir Putin.

According to Navalny’s supporters, his 30-month sentence, for alleged parole violations related to an embezzlement case, was trumped up for political reasons.

Russian authorities have denied the charge.

While Google declined comment, Twitter, Facebook, Tiktok and Telegram did not immediately respond to requests for comments.

A hearing against Google, Facebook and Twitter are scheduled for April 2.

($1 = 74.0525 roubles)