Inflation in Germany, Europe's biggest economy, remained at the low level of 0.8 percent for the fourth month in a row in October, final data showed on Thursday.
Confirming an earlier flash estimate, the federal statistics office Destatis calculated that German inflation stood at just 0.8 percent year-on-year last month, unchanged since July.
The last time inflation in Germany fell below 0.8 percent was in February 2010.
Using the Harmonised Index of Consumer Prices (HICP) -- the yardstick used by the European Central Bank -- inflation in Germany was even lower at 0.7 percent in October, way under the ECB's annual inflation target of just below 2.0 percent.
The chronically low level of inflation across the 18-nation eurozone has fuelled concern the region could slip into deflation -- a sustained and widespread drop in prices that hampers economic activity and threatens job losses.
While falling prices may sound good for consumers, deflation can trigger a vicious spiral where businesses and households delay purchases, throttling demand and causing companies to lay off workers.
Such concerns persuaded the ECB to cut interest rates to a new all-time low and roll out other anti-deflation measures such as a series of liquidity programmes to inject cash into the economy.