New Delhi, April 10 -- Brazil 's Supreme Court postponed on Thursday a decision on who will be governor of Rio de Janeiro state, extending a three-week crisis in the country's postcard region. Matters of policing, urban mobility and even gas prices are piling up on the desk of a local judge operating as caretaker.

Rio has had no governor since March 23, when Claudio Castro resigned to run for senator in October's elections, as required by law. Others who could fill his role are not available to take over.

Justice Flavio Dino asked for a review in a case that will establish whether Castro's successor until January will be picked by voters in an early election or by members of the state's scandal-prone legislature. He has up to 90 days to...