South Africa's President Jacob Zuma has been admitted to hospital for tests, his office has announced.

"Yesterday President Zuma was advised to rest following a demanding election," a statement said. Doctors were satisfied with his condition.

Mr Zuma, 72, was sworn in for a second term on 24 May following the African National Congress election victory.

His cabinet has to tackle worsening economic problems with unemployment at nearly 25%, analysts say.