Containers are stacked at a port in Pyeongtaek, Gyeonggi Province, July 1. Yonhap

Import prices fell at the steepest pace in 3 1/2 years in June due to a decrease in oil prices amid the Middle East conflict, central bank data showed Wednesday.

The import price index fell 4.4 percent on-month following a 0.2 percent on-month rise in May, according to the preliminary data from the Bank of Korea (BOK).

It marked the sharpest on-month decline since December 2022, when the index slid 6.5 percent.

On an on-year basis, the index climbed 20.6 percent in June.