Bloomberg reports that Amazon “is in the European Union’s cross hairs because its rapid expansion may have been fueled by tax measures that slashed its costs, according to the EU official spearheading a state-aid probe into the online giant.

“Gert-Jan Koopman, whose department at the European Commission was responsible for slapping Apple Inc. with a 13 billion-euro ($15.6 billion) tax repayment order last year, told a Brussels conference that the EU is targeting methods that are a menace to fair competition … Amazon and burger chain McDonald’s Corp. are tipped to be the next in line as the EU clamps down on tax deals it deems to be unfair. Both are under investigation for their fiscal arrangements with Luxembourg, which has gained a reputation for doling out special deals to big firms in the Grand-Duchy.”