South Korea's foreign currency reserves topped 400 billion U.S. dollars for the first time in June, keeping a record-breaking trend for the fourth consecutive month, central bank data showed Wednesday.

The foreign reserves reached a new record high of 400.3 billion dollars as of end-June, up 1.32 billion dollars from a month earlier, according to the Bank of Korea (BOK).

The figure continued to break previous highs for four months, surpassing 400 billion dollars for the first time.

It was over 100 times larger than 3.9 billion dollars that South Korea owned in late 1997 when the country received a bailout fund from the International Monetary Fund (IMF) for the foreign exchange crisis.

South Korea's foreign currency reserves topped 100 billion dollars in September 2001, 200 billion dollars in February 2005 and 300 billion dollars in April 2011, respectively.

The foreign reserves were composed of 367.91 billion dollars of securities, 22.42 billion dollars of deposits, 4.79 billion dollars of gold bullion, 3.26 billion dollars of special drawing rights and 1.91 billion dollars of IMF positions.

South Korea was the ninth largest holder of foreign reserves in the world, unchanged from the prior month.