Further, the global ratings agency has also warned that the lenders have to put in place alternative payment structures.
Country's largest private sector lender ICICI Bank has sold bonds times through its Bahrain branch in the past -- 600 million Chinese yuan bonds due in 2017 at 4 per cent coupon, 150 million Australian dollars at 6.125 per cent coupon due in 2019 and USD 340 million at 7.25 per cent coupon.
While those in the yuan are placed in credit watch with negative developing implications, the other bonds from these lenders have BBB- rating with a negative watch, S&P said in separate notes issued from Singapore.
The agency said it had originally placed each of the ratings on these issues on credit watch on February 22, 2016, after it had lowered the long-term sovereign credit rating on Bahrain to 'BB/stable/B' from 'BBB-/negative/A-3'.
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However, it added that "the agency is studying the effectiveness of the alternative payment structures that the banks are proposing to avoid and mitigate the sovereign risk of Bahrain."
It further said that it is keen to "resolve the credit watch status within a few weeks, or, at the latest, in the next three months".
"We may lower the ratings by multiple notches if, the new payment structure does not reduce the sovereign risk of the host country for these bondholders," it said.