It marked the longest low inflation since 2015 when the headline inflation hovered below 1 percent for 10 months from February of that year, according to Statistics Korea.
During the January-June period, the consumer price gained 0.6 percent compared with the same period of last year, marking the lowest increase in four years.
Price for agricultural, livestock and fishery products advanced 1.8 percent in June from a year earlier, pulling up the overall headline inflation by 0.13 percentage points.
Industrial product price was unchanged in the month, but oil product price declined 3.2 percent last month, pulling down the overall inflation by 0.14 percentage points.
Price for electricity, tap water and natural gas was up 1.3 percent in June from a year earlier, and services price rose 1 percent in the month.
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