Consumer prices grew more than three percent for the fourth consecutive month in January.
According to data from Statistics Korea on Friday, consumer prices increased three-point-six percent on-year last month.
Prices grew three-point-two percent in October last year, posting an on-year gain of more than three percent for the first time in almost a decade.
The last time prices topped that threshold for four months or more was from September 2010 to February 2012.
By product, prices of commodities rose four-point-five percent in January from a year earlier. In particular, the prices of petroleum products soared 16-point-four percent on-year in January, although it slowed from the previous month.
Price growth of agricultural, livestock and fisheries goods jumped six-point-three percent.
Core inflation, excluding volatile farm and petroleum product prices, rose three percent on-year in January, marking the first time in a decade to hit three percent.