On 5 April 2018, Brazil's Supreme Federal Court (STF) voted 6–5 to deny Lula's habeas corpus petition. The court ruled that Lula must begin serving the sentence relating to 12 July 2017 conviction, despite not having exhausted all of his appeals. Lula and his political party vowed to continue his campaign from prison following the court's decision that he must surrender himself by 6 April. The head of Brazil's army, General Eduardo Villas Boas, called for Lula to be placed behind bars. Lula failed to turn himself in at the scheduled time, but he did so on the following day on 7 April 2018. After the imprisonment of Lula, protesters took to the streets in cities across Brazil. Lula's imprisonment led to the formation of the Free Lula Movement.