The European Central Bank (ECB) announced it bought up Monday a massive 22 billion euros\'\' (31.5 billion dollars) worth of bonds issued by the most highly indebted Eurozone governments. The move, aiming at steadying reeling markets, raised ECB holdings of such bonds to 96 billion euros, reported dpa. The ECB portfolio began with Greek, Portuguese and Irish debt and has since been extended to Spanish and Italian bonds which have come under market pressure.