The head of Germany's biggest bank has called for Europe's "era of cheap money" to end as price bubbles form, sounding a warning a day before the European Central Bank holds a crucial policy meeting.
Deutsche Bank chief John Cryan said that while cheap money has helped countries and banks "emerge from the financial crisis" - the ECB is currently pouring €60billion (NZ$99b) into the economy each month - it is now causing "ever greater upheavals" across a number of areas.
"We are now seeing signs of bubbles in more and more parts of the capital market where we wouldn't have expected them," he said in Frankfurt, noting property prices in advanced economies had hit record levels.
Making a case for tighter monetary policy a day before ECB governors are expected to unveil plans to reduce money printing due to the stronger economy, he welcomed gradually ending loose monetary policy.
"The central banks must, however, plot a middle way that averts massive losses on the markets," he cautioned.