Gabonese President Omar Bongo, one of the world's longest-serving heads of state, has been hospitalized in serious condition in Barcelona, Spain's Foreign Ministry said, according to AP. Gabon's information minister denied Thursday that Bongo was ill, but a statement from the country's embassy in France later confirmed he was in a clinic in the Spanish city. A Foreign Ministry official in Madrid would not say what 73-year-old Bongo is suffering from, but said he is in «serious but stable» condition. Barcelona's Quiron Clinic told The Associated Press that Bongo is being treated there. Spokesman Carlos Segui said the hospital is not releasing further information at the request of Bongo's family.