Social security agency denied interest payments because new facts were unknown to it during administrative proceedings.

The Supreme Court dismissed the insured's cassation appeal against the Social Insurance Institution's refusal to pay interest on pension benefits. The insured argued that the agency delayed payment after a court ruling granted her pension rights. The court held that the agency fulfilled its duties as it could not access medical opinions only available in the subsequent court proceedings. Consequently, the delay was not attributable to the agency's fault, and no interest was due.