Most Federal Reserve officials believed at their September meeting that they would likely raise short-term interest rates again this year, but some cautioned the decision would hinge on whether inflation picks up.

Minutes of the Sept. 19-20 meeting, released Wednesday, indicate that lingering questions over inflation were driving a split among officials. The key question was whether the recent soft patch was due to temporary factors or longer-lasting developments.

One group of officials at the meeting believed it was the former. Others worried it was the latter and indicated that could lead them to reconsider the Fed’s projected path of rate increases this year and beyond.

Several officials said their decision on another rate move this year “would depend importantly on whether the economic data in coming months increased their confidence that inflation was moving up toward the committee’s symmetric 2% objective,” the minutes said.

Others, however, were worried that holding off on raising interest rates too long could lead to a surge in inflation that would be difficult to control. High asset prices added to their concern, the minutes said.