HARARE, May 29 — President Robert Mugabe has left Harare on a two-leg trip which will take him to Nigeria and Sudan for inauguration ceremonies for presidents of the two countries who triumphed in recent elections.

In Nigeria, President Mugabe, who is the current African Union (AU) chairman, will join some 50 Heads of State and government at the inauguration of President-elect Muhammadu Buhari on Friday.

Buhari was elected to lead the West African country after beating incumbent Goodluck Jonathan in recent polls.

Foreign Affairs Minister Simbarashe Mumbengegwi told journalists here Thursday that President Mugabe would attend the event in his capacity as chairman of the African Union.

“This is extremely important because it signifies the endorsement and stamp of approval from the African continent that indeed Nigeria has had extremely credible elections,” he said.

From Abuja, President Mugabe will head to Khartoum, for the inauguration of President Omar Hassan al-Bashir set for June 2.

President Bashir won 94.05 percent of votes in elections held last month while his National Congress Party won 323 of 426 Parliamentary seats.

Mumbengegwi said the presence of President Mugabe in Khartoum would also signify a seal of approval for the Sudanese elections.

He said President Mugabe would also use the opportunity to discuss various areas of mutual interest with his Sudanese counterpart.

By winning the 2015 Presidential elections, Bashir extended his nearly three-decade rule for another five-year term.

Sudan has faced a rebellion in the Darfur region since 2003, and a separate but linked insurgency in the Blue Nile and South Kordofan States since the secession of South Sudan in 2011.

Egyptian President Abdel Fatah al-Sisi is among other leaders who will travel to Khartoum to attend the inauguration ceremony.