The president, who was conveyed by a chopper from Akanu Ibiam International Airport, Enugu, landed at Army Barracks Nkwagu in Abakaliki at about 11.15am accompanied by the state Governor, Dave Umahi, who was among other South-east governors who had received him at the airport.
This will make it the second time in a day, the president will be snubbing the official activities.
Buhari is on record to have said that the unity of Nigeria was non-negotiable.
"As the most populous country in Africa, with over 300 ethnic groups, our diversity is unique among nations".
He assured the people of South-east of his administration's commitment to execute projects that will lead to the fast-tracking of development in the region.
"When I met with leaders from the South East last month in Abuja, they raised several issues of concern, including the state of the roads and infrastructure in the region".
"I will not disclose the number of personnel we have drafted for security reasons, but I assure citizens that enough personnel have been deployed across the state to ensure a hitch-free visit".
He also inaugurated the 700-metre dual flyover over the Trans-Sahara route, running from Enugu to Cameroon, and the Sen.
TheNewsGuru reports President Buhari was conferred with the title of Enyioma 1 of Ebonyi and Ochioha Ndi Igbo 1.
He also laid the foundation of the ultramodern shopping mall to be constructed by the state government.