The eurozone fell back into deflation in September, after prices dropped 0.1% in September.
Eurostat, the eurozone's official statistics agency, said an 8.9% fall in energy prices contributed to the first drop in overall prices for six months.
Core inflation however, which excludes food and energy prices, was up 0.9% during September.
Earlier this month, the president of the European Central Bank (ECB) Mario Draghi warned that prices could fall. Overall in 2015, the ECB expects inflation to be 0.1% before rising to 1.5% next year and 1.7% in 2017.
Eurostat also revealed that the eurozone's unemployment rate remained unchanged at 11% in August.