American Christian Evangelist Billy Graham has died at the age of 99, according to the Billy Graham Evangelistic Association.

His death was confirmed this morning at his home in North Carolina. A spokesman says he died of natural causes.

Graham rose to prominence in the 1950s and 60s thanks to the annual Billy Graham Crusades, holding large indoor and outdoor rallies and preaching to live audiences across the world.

Through his career, Graham repudiated segregation and became one of the most trusted spiritual advisers to many American presidents. 

Graham also operated a wide variety of media and publishing outlets, with his staff claiming he led more than 3.2-million people to Christianity over his career.