The Supreme Court of the territory ruled unanimously that Pedro Pierluisi’s swearing in as governor was unconstitutional and ordered him to resign by 5 p.m.

Last week, then-Governor Ricardo Rosello appointed Pierluisi Secretary of State in order to assume office after Rosello’s planned resignation.

However, Pierluisi only received a confirmation vote in the House of Representatives.

This complied with a 2005 legislative amendment, but the court ruled it violated Puerto Rico’s constitution, which mandates confirmation from both of the territory’s legislative bodies.

Rosello’s Secretary of Justice Wanda Vazquez was next in line for the governorship, but said she did not want the position.

After the court’s ruling, though, Vazquez said she will assume the governorship in order to provide the island certainty and stability.