United Natural Foods Inc one of the largest U.S. grocery distributors whose clients include Whole Foods, took certain systems offline in recent days after the discovery of unauthorized activity on internal networks,

United Natural Foods Inc., the primary distributor for Whole Foods, said Monday it had to take some of its systems offline after an apparent cyberattack. Why it matters: In the short-term, the company might not be able to fully fulfill customers' orders as it investigates the potential hack.

Company says breach affected its ability to fulfil customer orders and is expected to cause further interruptions