Former South African president and anti-apartheid titan Nelson Mandela is making "steady improvement" under treatment for pneumonia and is much better now than when he was hospitalised a week ago, the government said on Wednesday.
Authorities say 18 people have been killed in a head-on collision between two buses in central Nigeria.
Nelson Mandela is "much better" and responding "satisfactorily" to treatment after a week in hospital for pneumonia, the South African presidency said on Wednesday.

Football legend Pele was investigated by Brazil's 1964-1985 military dictatorship, records released on Monday showed. The records are among nearly 300,000 digital files posted on the "Political Memory and Resistance" portal.
Jamaican sprint star Usain Bolt narrowly missed breaking his own world record by powering to victory in a 150m exhibition event in Rio De Janeiro at the Copacabana beach.
Five people were killed when a South African Air Force (SAAF) helicopter crashed on Saturday night, Xinhua reported on Sunday.
Five South African soldiers were killed in a helicopter crash on Saturday while they were on patrol for rhino poachers in the Kruger National Park, the defence department said today.
A suicide bomber attempted to force his way past the defenses of the city of Timbuktu on Saturday, detonating himself on its outskirts, while a landmine exploded in another part of northern Mali, killing a total of three, officials said.
Nelson Mandela was comfortable and breathing without difficulty as the anti-apartheid hero spent his fourth night in hospital after being treated for pneumonia, South Africa's presidency said.

South Africa might have had an Indian-origin First Lady if Amina Cachalia had agreed to a proposal of marriage from the country’s first democratically elected President Nelson Mandela.
Egypt's public prosecutor on Saturday ordered the arrest of popular satirist Bassem Youssef over alleged insults to Islam and to President Mohamed Morsi, in the latest clampdown on critical media.
Kenya's Supreme Court on Saturday upheld the victory of Uhuru Kenyatta in the March 4 presidential election, Chief Justice Willy Mutunga said.
Nelson Mandela was comfortable and breathing without difficulty after being treated for pneumonia, the presidency said today as the anti-apartheid icon spent a third day in hospital.

South Africa might have had an Indian-origin First Lady if Amina Cachalia had agreed to a proposal of marriage from the country's first democratically elected President Nelson Mandela.
Nelson Mandela was spending his third day in the hospital today, after making "steady progress" for a recurring lung infection, the latest health scare
for the nonagenarian anti-apartheid icon.