SEOUL, June 11 (Reuters) - Most Bank of Korea board members said the central bank needed to be cautious about easing monetary policy at their rate decision meeting on May 23, as there remained uncertainty over price pressures, minutes showed on Tuesday.

The South Korean central bank last month held interest rates at a 15-year high of 3.50% and struck a balanced policy tone, as it reiterated risks around inflationary pressures in the wake of stronger-than-expected economic growth.

At the meeting, five board members saw the policy interest rate staying at 3.50% for the next three months, while one said it was desirable to keep the door open for a rate cut. (Reporting by Jihoon Lee Editing by Ed Davies)