Twitter has suspended several accounts run by the Cuban government including those of state-run media and of officials including the daughter of Communist party leader Raul Castro.
The social media giant cited violations of its policies.
The move came just as President Miguel Díaz-Canel made a televised statement about potential fuel shortages.
Cuba’s pro-government journalists’ union denounced the suspensions as “massive censorship”.
“What is new here is the massive scope of this act of cybernetic warfare, clearly planned, that aims to limit the freedom of expression of Cuban institutions and citizens and to silence the leaders of the revolution,” the union said in a statement.
The suspensions began a little before the announcement on state TV on Wednesday by President Diaz-Canel and continued the following morning.