Alexis Tsipras said today the allegations are indicative of the "moral decadence" that helped stoke Greece's debt crisis.
The claims follow an investigation into bribes Swiss drug-maker Novartis allegedly paid to boost sales and prices of Novartis products at state hospitals.
Under Greek law, allegations concerning politicians must be reviewed by Parliament before lawmakers can authorise prosecutions.
The officials allegedly involved include Bank of Greece governor Yannis Stournaras, EU Home Affairs Commissioner Dimitris Avramopoulos, former conservative prime minister Antonis Samaras, and Panagiotos Pikramenos, a former caretaker prime minister. They have denied the allegations.
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