Yanis Varoufakis, the former Greek finance minister, could face criminal charges over plans to set up an alternative payment system.
The Greek parliament has received two legal complaints about the secret contingency plans made by Yanis Varoufakis and a working group in case Greece was forced to issue a temporary currency, such as scrip, because it no longer had access to euros.
Varoufakis is immune from criminal prosecution because of his position as an MP, but this protection could be overturned by the Greek parliament in a ballot when it reviews the allegations. Varoufakis would then be tried in a special court.
Parliament has received the complaints from the Supreme Court on behalf of a lawyer and a mayor, and separately from a group of opposition conservative MPs.