South Korean bonds are continuing to attract foreign investment, despite some selling by Thai and Malaysian central banks due to "their own circumstances", a senior finance ministry official told Reuters.

Foreign investors, including most other central banks, were net buyers of 1.6 trillion won ($1.35 billion) worth of government and central bank bonds this month, said Kim Hye-cheon, head of the ministry's government bond department.

He made the remarks after official data early showing that South Korean stocks and bonds saw their biggest monthly outflow in four years in July