Macy’s reported stronger-than-expected sales for the third quarter and said it’s delaying the release of its full quarterly results after it discovered an employee intentionally hid up to $154 million of expenses over several years.

Macy's M.N on Monday delayed its third-quarter results after finding that an employee hid as much as $154 million in expenses over years, instead issuing preliminary sales figures that fell short of Wall Street expectations.

The company said the employee no longer works for Macy's, and that the person's actions did not affect its cash management and vendor payments. It is unclear if they are pursuing criminal charges.