Just a few weeks after reporting that Weber Shandwick and Current Lifestyle Marketing had won the Kellogg account for U.S. brands, Ad Age is reporting that the companies have parted ways because of “an apparent conflict of interest.”

A Weber Shandwick spokesperson tells the publication that “a business issue” has forced the separation. Ad Age says it could be a larger IPG issue.

Brandy Ruff, Kellogg’s director of brand relations, told the magazine that they will search for another firm.