The wife of Nigeria’s President Muhammadu Buhari says he is recovering from his illness.

Aisha Buhari has just returned from a trip to London where the president is getting treatment for an undisclosed illness.

In a statement issued by her spokesperson Mrs Buhari said “he is recuperating fast”.

He left for London nearly a month ago – his second trip to the UK for treatment this year.

Vice-President Yemi Osinbajo is acting president, but there has been concern about Mr Buhari’s ability to resume his duties.

Mr Buhari thanked Nigerians for their support.

Buhari’s unhealthy start to 2017:

19 January – Leaves for UK on “medical vacation”

5 February – Asks parliament to extend medical leave

10 March – Returns home but does not resume work immediately

26 April – Misses second cabinet meeting and is “working from home”

28 April – Misses Friday prayers

3 May – Misses third cabinet meeting

5 May – Appears at Friday prayers in Abuja

7 May – Travels to UK for further treatment

6 June – Aisha Buhari says his is ‘recuperating fast’