Greek Prime Minister Alexis Tsipras Sunday announced that the country's crisis-hit banks will be shut today and capital controls imposed to prevent withdrawals, after cash machines ran dry. Tsipras said this in a statement that again called for an extension to Greece's current bailout programme. The Greek stock market will also remain closed today as part of measures designed to prevent fresh panic. Ahead of the announcement, Greeks raced Sunday to find functioning cash machines in an increasingly anxious run on the banks, as speculation mounted over impending drastic restrictions.Meanwhile, the International Monetary Fund Managing Director Christine Lagarde has said, IMF is carefully monitoring the unfolding financial crisis in Greece and neighbouring countries, and is ready to provide assistance as needed. Lagarde expressed disappointment that talks broke down Sunday between Athens and its creditors, but said, she believed the Euro zone was in a strong position to respond to the crisis.