South Africa has fallen into recession for the first time in eight years after the economy shrank by 0.7% between January and March.
The downturn, due to weak manufacturing and trade, follows a 0.3% fall in GDP in the final quarter last year.
It is the first time that the economy has contracted for two consecutive quarters - the technical definition of a recession - since 2009.
The value of the rand fell by 1% on the currency markets.
Analysts had expected GDP to grow by 0.9% during the first quarter. However, Joe de Beer, deputy director general of Statistics South Africa, said: "We can now pronounce that the economy is in recession."
He added: "The major industries that contracted in the economy were the trade and manufacturing sectors."
Africa's third-largest economy is under pressure after President Jacob Zuma fired its respected finance minister, Pravin Gordhan, earlier this year.
It prompted two credit rating agencies, Standard and Poor's and Fitch, to downgrade South Africa's credit worthiness to junk.
This means it is more expensive for South Africa to borrow money, because it is seen as having a higher risk defaulting on its debts.
Last week, S&P and Fitch pointed to further concerns about the South African economy, including uncertainty over who will succeed President Zuma as leader of the ruling African National Congress.
A successor is expected to be chosen in December, but Mr Zuma can remain as head of state until an election in 2019.