US entrepreneur and the owner of social media platform X, Elon Musk, says he will reactivate some of its accounts that Brazilian justice authorities had ordered blocked.

The social media company announced on Saturday that it had been forced by Brazilian court decisions to block certain popular accounts in Brazil. It said, "We are prohibited from saying which court or judge issued the order, or on what grounds."

Shortly after the announcement, Musk declared, "We are lifting all restrictions." He said the Brazilian side has applied massive fines but that principles matter more than profit. He appears to be framing his actions as placing priority on protecting freedom of speech.

In Brazil, a Cabinet member in charge of justice has declared an urgent need to regulate social networks, apparently criticizing the spread of alleged fake news and hate messages.

After Musk's declaration, media outlets including Reuters news agency reported that Brazilian justice authorities on Sunday opened an inquiry into Musk on suspicion of obstruction of justice.