Some European Central Bank officials are considering extending the quantitative-easing program at €30 billion per month for nine months, starting January 2018, Bloomberg News reported, citing "officials familiar with the debate."

Although governors are split on the need to specify an end date, the ECB's commitment to keep buying bonds until September 2018 may be acceptable, the officials added. Current bond purchases run at €60 billion per month.

Some governors see the recent economic growth robust enough to warrant a wind-down, while others are concerned about weak inflation, Bloomberg News noted.

The central bank is widely expected to announce the future of the QE program on Oct. 26.