France, Sept. 21 -- A computer hiccup has left around 3,000 French pensioners living abroad without their monthly retirement payments.

The caisse nationale d'assurance vieillesse (Cnav), which oversees the transactions into the pensioners' French bank accounts, admitted the glitch, according to the newspaper Le Parisien.

Retirees with postal addresses in Thailand, Brazil, Croatia and Australia failed to get their money after the system considered their cases "risky".

But the computer meltdown prompted a flurry of angry tweets and emails.

Several members of the French pensioners in ThailandFacebook group complained about the logjam in posts and Cnav's denial of a cyber attack.

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