- Aisha Buhari's office said late on Sunday that she was first heading to the AU summit in Addis Ababa.
- He left for the British capital again on May 7 for a second round of medical treatment.
The wife of ailing Nigerian President Muhammadu Buhari has left the country to visit him in London after first attending an African Union event, her office said.
Aisha Buhari's office said late on Sunday that she was first heading to the AU summit in Addis Ababa for a "symbolic appearance" at a leaders' wives meeting.
She will then head to Britain on Tuesday, a statement said, adding: ""She will convey to the president the best wishes of Nigerians and their fervent prayers for his quick recovery."
Aisha Buhari first visited her 74-year-old husband in London on May 30 and returned to Nigeria on June 6, saying he was recovering fast.
The head of state of Africa's most populous nation has spent most of this year in London receiving treatment for an unspecified medical condition.