The Nigerian Bar Association on Friday threatened President Muhammadu Buhari with legal action should he continue with what it described as "constitutional dereliction" in governance.
On Monday, the President announced his plan to travel to London to see his doctor on his Twitter handle, and a statement from the Presidency followed the tweet.
When asked by journalists why he returned earlier than expected, the President said; "It is not earlier than expected".
This is at least the third medical trip Buhari has undertaken to the United Kingdom in 2018 alone.
Speaking on Hard Copy, a Channels Television programme on Friday, the minister said Buhari directed that his son should be treated in Nigeria even when people were clamouring that he should be flown overseas.
AT&T chief lobbyist out after hiring Trump attorney Michael Cohen
The documents specified that Cohen, who was not a registered lobbyist, was to spend none of his time engaged in lobbying. The payment was the first known activity involving Essentials Consulting, a shell company incorporated in DE by Cohen.
His Special Assistant on Media and Publicity, Garba Shehu, had said the President would return on Saturday but he returned back to the country a day earlier.
"He's not the only one", he said.
PDP doubled down on its claims that the president was very sick on Tuesday, noting that Buhari was "unwell, ailing and unfit to attend to state matters".
Buhari's health has come under public scrutiny in the past two years after he spent months in London for undisclosed medical reasons in 2016 and 2017. He also said he had "blood transfusions, going to the laboratories and so on and so forth". Buhari's media aide dismissed the claim.