Leading banks have funded cluster bomb-makers to the tune of $5 billion in the past two years despite an international accord to ban the weapons, a study said Thursday.

The report by Profundo consultancy and several NGOs said the banks loaned money to companies whose products include cluster bombs or their components. The manufacturers could use the money for any of their production lines.

The top five loan providers were Bank of America, Citigroup, JP Morgan, Barclays and Goldman Sachs, the study said Thursday.