The European Union's top court upheld the 2.4 billion euro fine imposed on Google in an antitrust investigation.

• On Tuesday, Europe's highest court upheld the 2.4 billion euro ($2.65 billion) fine imposed on Google for favoring its own shopping comparison service.
• An antitrust investigation by the European Commission, the executive arm of the European Union, led to the imposition of a fine in 2017.
• At the time, the Commission stated that Google had given preference to its own shopping comparison service over those of its competitors.

On Tuesday, Europe's highest court upheld a 2.4 billion euro ($2.65 billion) fine against for favoring its own shopping comparison service while abusing its dominant position.

CNBC has reached out to Google for comment.

An antitrust investigation by the European Commission, the executive arm of the European Union, led to the imposition of a fine in 2017.

At the time, Google's shopping comparison service was preferred by the commission over its competitors.

Google challenged the verdict in the General Court, the EU's second-tier court, which affirmed the penalty. Subsequently, Google brought the matter before the European Court of Justice, the EU's highest court.

The ECJ on Tuesday dismissed the appeal and upheld the commission's fine.

A Google spokesperson expressed disappointment over the Court's decision, as reported by CNBC on Tuesday.

"The judgment pertains to a particular set of circumstances. In 2017, we implemented modifications to adhere to the European Commission's directive. Over the past seven years, our strategy has been highly effective, resulting in billions of clicks for over 800 comparison shopping services."

In 2017, Google implemented changes that required it to compete with others for advertising slots in shopping search results, in response to European concerns.

The EU has secured another major victory with the Google decision, which was confirmed by the ECJ on Tuesday, requiring the company to pay 13 billion euros in back taxes in Ireland.

The EU launched an investigation into Alphabet under its Digital Markets Act in March, which scrutinizes the practices of tech companies in Europe.

The Department of Justice has filed an antitrust case against Google in the U.S. over its advertising business, following a similar case earlier this year.