In just one week after the Commission filed antitrust charges against U.S. tech giant, Google, European Union’s competition commissioner, Margrethe Vestager, is at it again, but this time, her attention has shifted to Russian energy titan, Gazprom. According to news sources, the Commission is expected to charge Gazprom for abusing its dominant position in some eastern and southern European markets, the New York Times said.

The EU regulator has long suspected the gas supplier of engaging in unfair behavior. In 2012, the Commission launched a formal investigation into the company’s practices, but Russian President Vladimir Putin fired back with a ruling preventing the gas supplier from disclosing information to foreign authorities without approval from the government.