"Sri Lanka is engaged with other official bilateral creditors to obtain similar assurances," an IMF spokesperson said in a statement.

"As soon as adequate assurances are obtained and remaining requirements are met, including by the Sri Lankan authorities, a Fund-supported program for Sri Lanka can be presented to the IMF's Executive Board for approval that would unlock much needed financing."

(Reporting by Andrea Shalal and Ismail Shakil; writing by Costas Pitas; editing by Tim Ahmann)