Brazil opens inquiry into Elon Musk for obstruction

Musk earlier on Sunday posted that X will lift the restrictions because they were unconstitutional.

In his decision, Moraes said: "X shall refrain from disobeying any court order already issued, including performing any profile reactivation that has been blocked by this Supreme Court."

If X fails to comply with the order to block certain accounts the company will be fined 100,000 reais ($A30,041) per day, the judge said.

Earlier Brazil's solicitor general, Jorge Messias called for regulation of social media networks to prevent foreign platforms from violating Brazilian laws.

"We cannot live in a society in which billionaires domiciled abroad have control of social networks and put themselves in a position to violate the rule of law, failing to comply with court orders and threatening our authorities," Messias said in a post on X.