The president of Venezuela's opposition-run Congress on Monday accused Wall Street investment bank Goldman Sachs of "aiding and abetting the country's dictatorial regime" following a report that it had bought $2.8 billion in bonds from the cash-strapped country.

The Wall Street Journal on Sunday said Goldman paid 31 cents on the dollar for bonds issued by state oil company PDVSA that mature in 2022, or around $865 million, citing five people familiar with the transaction.

That comes as two months of opposition protests against President Nicolas Maduro have killed almost 60 people and the collapse of the country's socialist economy has left millions of people struggling to eat.