His comments came as the Special Presidential panel to investigate the Bond scam suspended its sittings on Thursday to verify the issue date of a government gazette dated January 1, 2015 just a week before Rajapaksa was defeated by President Maithripala Sirisena.
Sirisena's victory ended a nearly decade-long rule of Rajapaksa in 2015.
"I am not the finance minister after January 8. Those in that position after January 8 have done a major fraud using my name," Rajapaksa said at Colombo east's Horana town.
It was alleged that a firm associated with then Central Bank Governor Arjuna Mahendran's son was benefited from the deal through insider information.
Mahendran was a handpick of Prime Minister Ranil Wickremesinghe and the premier's defence of the Governor led to a parliamentary probe on the Bond issues.
Mahendran was later removed by Sirisena apparently due to public pressure.
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