Prior to Nelson Mandela's admission to hospital with a recurrence of lung infection, he was reportedly suffering from a heavy cold.
According to one person who saw the former South African President on Tuesday, at that point there was no reason for any particular concern.
ITV News' Africa Correspondent Rohit Kachroo reports from Pretoria.
More top news
ITV News Europe Editor Emma Murphy said Putin's team have pointedly claimed the Skripal poisoning crisis has boosted his victory.
Largely dry elsewhere tonight with a widespread frost and icy stretches
The so-called mini-Beast from the East has swept in, bringing with it snow, ice and strong winds.