Bank of Japan policymakers were divided on how soon they could raise interest rates with some warning of the risk of renewed market volatility, a summary of opinions at the October policy meeting showed on Monday.

Bank of Japan board members discussed the need for caution on raising its benchmark rate and offered no clear hint of a move next month, a summary of opinions from its October policy meeting showed.

The corporate goods price index (CGPI), which measures the price that companies charge each other for goods and services, rose 3.4% in October from a year earlier, Bank of Japan data showed, above market forecasts for a 3.0% gain. It followed a 3.1% increase in September.

The Bank of Japan kept its benchmark interest rate unchanged while sticking to its view that it’s on track to achieve its inflation target, an outlook that points to the possibility of another rate hike in the coming months.

The summary of opinions from the BOJ’s October policy meeting on Monday revealed divisions among members on the timing of future interest rate hikes, with some warning of the risk of renewed market volatility.