Japan's wholesale inflation accelerated in October as renewed yen falls pushed up import costs for some goods, data showed on Wednesday, complicating the central bank's decision on how soon to raise interest rates.

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 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.