Venezuelan President Hugo Chavez has died, Vice President Nicolas Maduro said Tuesday. He was 58.

Chavez announced he had cancer in 2011. He spent more than two months in treatment in Cuba recently, returning to Venezuela two weeks ago. Officials have not said what type of cancer he had.

Chavez has been Venezuela’s president since 1998. His country’s economy has been highly dependent on oil sales to the U.S., but he was an avowed critic of American capitalism.

On Tuesday, Venezuela accused the domestic and foreign enemies of Venezuela of attacking Chavez and expelled 2 U.S. Embassy officials who it said was seeking military support for a plot against the government.

Read more: CNN