President Muhammadu Buhari returned to Abuja on Friday from Kenya, contrary to plans to proceed from there to London for his medical check-up.
The president had been attending the United Nations Environmental Programme (UNEP) at 50 in Nairobi, and was scheduled to see his London doctors afterwards.
No reason has been given for Mr Buhari’s unplanned detour.
While in Kenya, the president participated in the Special Session to commemorate the 50th anniversary of the United Nation’s body.
Mr Buhari said: “As we celebrate the 50th anniversary of UNEP’s existence, we laud the efforts of UNEP and encourage broader action to overcome climate change, biodiversity, rising levels of pollution and waste being three major crises threatening our planet.
The president also met with Ibrahim Thiaw, Executive Secretary of the UN Convention to Combat Desertification (UNCCD) in Nairobi.
During the meeting, Mr Buhari directed collaboration between the Ministries of Environment, Water Resources, Agriculture and Rural Development and Power to combat desertification.
(NAN)