Apple is set to be fined by the European Union's antitrust regulators under the bloc's landmark rules aimed at reining in the power of Big Tech, making it the first company to be sanctioned, sources with direct knowledge of the matter said on Tuesday.

The penalty, under the Digital Markets Act, is related to the iPhone maker's App Store Apple is set to face the first-ever fine under the European Union's new digital antitrust rules for Big Tech, representing an escalation of a clash with regulators over the dominance of its hugely profitable App Store.