Myanmar's former military ruler sees erstwhile foe Aung San Suu Kyi as the country's "future leader" and has pledged support for her in a secret meeting, the general's grandson said.

Details of Friday's meeting between the two was revealed by General Than Shwe's grandson, who acted as intermediary.

His grandson Nay Shwe Thway Aung quoted him as having said in the meeting: "It is the truth that she will become the future leader of the country," and "I will support her with all of my efforts".