South Korea plans to issue state bonds worth about 6.9 trillion won (US$6.2 billion) in September, the finance ministry said Thursday. According to the ministry, the government seeks to sell 1.85 trillion won in three-year Treasuries, 1.85 trillion won in five-year debts and 1.8 trillion won worth of 10-year bonds next month. It also plans to issue 700 billion won worth of bonds that mature in 20 years and 700 billion won in 30-year bonds. The ministry said it sold about 7.64 trillion won worth of bonds this month.