Two opposition lawmakers today made public a purported "letter of support" by the government to undertake a RM9.6 billion borrowing by the 1Malaysia Development Bhd (1MDB).

DAP's Petaling Jaya Utara MP Tony Pua and PKR's Pandan MP Rafizi Ramli made public the letter.

Last week, Deputy Finance Minister Ahmad Maslan denied the existence of any such letter.

The three-page letter, signed by the finance minister, is said to be part of the "offering circular" published by Goldman Sachs International, which raised the bond for 1MDB.

It has a 10-year validity period and explicitly states that Malaysia will undertake the repayment of the monies owed if 1MDB is unable to pay.

Pua asked the government to "blacklist" Goldman Sachs if the American multinational investment banking firm had "lied" about the validity of the support letter.

However, Rafizi claimed that Ahmad had "misled" the Dewan Rakyat and intends to refer him to the rights and privileges committee.

The government has repeatedly claimed that it only guaranteed RM5.8 billion of 1MDB's total debts.

Pua had earlier said that Malaysia’s “international image” is at stake if the letter issued by Goldman Sachs, which was distributed to all of the bond investors, is indeed fake.

“The government must make a police report against GSI and even rope in Interpol. All government agencies must cease doing any business with GSI and they must blacklist the investment bank,” Pua said.

He claimed that investors had been calling to find out if they had invested money based on a latter of support which was not true.

The letter of support is not categorised as  a guarantee, and does not feature in the government’s contingent liabilities.