ECB tells Greek banks not to raise exposure to government's debt - source

ATHENS (Reuters) - The European Central Bank (ECB) has asked Greek banks not to increase their holdings of Greek government debt, including Treasury bills, a banking source familiar with the matter told Reuters on Tuesday.

Greece depends on aid from the European Union, the International Monetary Fund and the ECB. But with this aid frozen, the ECB's move increases the pressure on Athens to reach rapid agreement with its creditors on a reform package to unlock fresh cash.