Giant photographs of former president Nelson Mandela are displayed at the Nelson Mandela Legacy Exhibition at the Civic Centre in Cape Town, South Africa, Thursday, June 27, 2013. President Jacob Zuma canceled a trip to Mozambique on Thursday in an indication of heightened concern about Mandela, whose health deteriorated last weekend. (AP Photo)

JOHANNESBURG (AP) — The office of the South African president says Nelson Mandela has made a “sustained improvement” although he remains in a critical condition.

The statement said that President Jacob Zuma visited Mandela in hospital on Monday and told the former president of the love and support of all South Africans that was displayed at the leader’s 95th birthday celebrations last week.

Mandela, who was jailed for 27 years during white minority rule, was taken to a Pretoria hospital on June 8 to be treated for a recurring lung infection.

Copyright 2013 The Associated Press.