President Muhammadu Buhari has said he will "continue to rest" after returning home from seven weeks of medical leave in the UK this morning.
Speaking to dignitaries in the capital, Abuja, he said Vice-President Yemi Osinbajo will remain in charge.
The 74-year-old flew into an air force base in the northern city of Kaduna from London today, Friday 10 March 2017.
Details of his condition have not been disclosed, prompting calls from the opposition for greater transparency.
The president said he was "feeling much better now" but added that further medical checks would be required.
At the end of his nine-minute speech, Mr Buhari said that he deliberately came back towards the weekend "so that the vice-president will continue and I will continue to rest".