Catherine Sholchet, CNN

(CNN) -- Cuban state media this week expressed outrage at a rumor of the death of Fidel Castro, and even pinpointed the Twitter account they say sparked the fuss. But the account's owner, a Spaniard named David Fernandez, says Cuba has it wrong.

An expose published on the state-run Cuba Debate website claimed to track down the origin of the rumor that the leader of the Cuban revolution had died. It's investigation led to Fernandez's Twitter page, where he goes by the handle @naroh.