South Korea's recent hikes in gas rates were inevitable due to high global prices, and the government will continue to raise the rates in line with market factors while extending support to vulnerable groups, Industry Minister Lee Chang-yang said Thursday.

Lee made the remarks during a parliamentary session amid a public outcry over a recent spike in heating bills. Government data showed that monthly gas rates surged more than 30 percent last month on-year.

"Last year, global natural gas prices skyrocketed as much as 10 times due to the Ukraine crisis and other factors. In a move to ensure stable energy supplies, the government reflected part of the factors in the rates," Lee said.

The minister, however, stressed that the government will continue moves to "normalize energy rates in phases in accordance with market principles," while pushing for the transition to a low-consumption and high-efficiency structure.

"The inevitable rate hikes and the surge in wintertime demand raised the burden for the people. ... The government will implement measures to better support the vulnerable people," he added.

Speaking of the economic situation, Lee voiced concerns over a fall in both exports and investment this year amid a global economic slowdown and high interest rates.

"We will provide a record amount of 360 trillion won ($284.7 billion) in trade financing this year and extend an additional 900 billon won to support exporters in the first half of this year alone," Lee said. "We will strive for an economic recovery and a rebound in an exports in the second half."

In January, exports fell 16.6 percent on-year to come to US$46.27 billion, reporting an on-year decline for the fourth consecutive month particularly on weak global demand for semiconductors. (Yonhap)