The head of Venezuela's presidential guard says a heart attack killed a suffering Hugo Chavez, the Associated Press reports.
General Jose Ornella also said Chavez mouthed his desire to live during his final moments:
He couldn't speak, but he said it with his lips ... 'I don't want to die. Please don't let me die,' because he loved his country, he sacrificed himself for his country.
Venezuelan authorities have not said what kind of cancer Chavez had or specified exactly where tumors were removed.