Former Nigerian President Muhammadu Buhari, who led the country twice as a military head of state and a democratic president, has died at age 82, his press secretary said Sunday.

When Muhammadu Buhari was elected in 2015, on his fourth attempt, he became the first opposition candidate to win a presidential election.

Muhammadu Buhari's life tracked the dramatic changes in politics in Nigeria over the last five decades – and he was often at the centre of events. The former Nigerian president, who died on Sunday at the age of 82,