A photo on the Seattle-based company's U.S. Web site shows two men, one Asian and one black, and a white woman seated at a conference room table. But on the Web site of Microsoft's Polish business unit, the black man's head has been replaced with that of a white man. The color of his hand remains unchanged.

The photo editing sparked criticism online. Some bloggers said Poland's ethnic homogeneity may have played a role in changing the photo.

"We are looking into the details of this situation," Microsoft spokesperson Lou Gellos said in a statement Tuesday. "We apologize and are in the process of pulling down the image."