The Cuban revolutionary leader who built a communist state on the doorstep of the United States, Fidel Castro, has died, his younger brother announced on Friday.

The leader, who for five decades defied U.S. efforts to topple him, died at 90.

A towering figure of the second half of the 20th Century, Castro stayed true to his ideology beyond the collapse of Soviet communism, and retained an aura in parts of the world that had struggled against colonial rule and exploitation.

He had been in poor health since an intestinal ailment nearly killed him in 2006. He formally ceded power to his younger brother two years later.

Wearing a green military uniform, Cuba’s President Raul Castro appeared on state television to announce his brother’s death.

“At 10.29 at night, the chief commander of the Cuban revolution, Fidel Castro Ruz, died,” he said, without giving a cause of death.

“Ever onward, to victory,” he said, using the slogan of the Cuban revolution.

Reuters reports that tributes poured in from world leaders including Indian Prime Minister Narendra Modi and Venezuela’s socialist President Nicolas Maduro, who said “revolutionaries of the world must follow his legacy.”

The streets were quiet in Havana, but some residents reacted with sadness to the news, while in Miami, where many exiles from the Communist government live, a large crowd waving Cuban flags cheered, danced and banged on pots and pans, a video on social media showed.

“I am very upset. Whatever you want to say, he is public figure that the whole world respected and loved,” said Havana student Sariel Valdespino.

Castro’s remains will be cremated, according to his wishes. His brother said details of his funeral would be given on Saturday.

The bearded Fidel Castro took power in a 1959 revolution and ruled Cuba for 49 years with a mix of charisma and iron will, creating a one-party state and becoming a central figure in the Cold War.