The office of Switzerland's prosecutor general said Friday it was investigating Greece's jailed former defence minister Akis Tsochatzopoulos over suspected money laundering.
Michael Lauber's office said the probe was triggered by information from Switzerland's anti-laundering unit and focused on offshore companies the former minister and his cousin were thought to be running out of Switzerland.
In a report released by his office, Lauber said more than $10 million (7.6 million euros) had already been blocked in banks in Zurich and Geneva.
Tsochatzopoulos, a founding member of Greece's Socialist Pasok party, has been in jail for a year.
He was sentenced to eight years last month for failing to disclose his wealth but awaits trial on charges of receiving colossal kickbacks on military procurement contracts.