TUNIS: The jailed leader of Tunisia's Islamist Ennahdha party and key opposition figure Rached Ghannouchi has been hospitalised following a "serious deterioration in his health", his party said on Thursday. Ennahdha did not say when he was hospitalised nor did it give any details on his condition. Ghannouchi, 84, "suffered a serious deterioration in his health, which forced the prison administration to urgently transfer him to hospital", it said in a post on Facebook, adding he had been placed under medical surveillance.