London (CNN Business) Apple has another antitrust problem in Europe.

Dutch regulators said Thursday that they have opened an investigation into whether Apple has abused its market position by giving preferential treatment to its own apps.

The Netherlands Authority for Consumers and Markets said in a statement that app providers have submitted evidence "which seem to indicate that Apple abuses its position in the App Store."

Apple AAPL The regulator said it had been studying the issue for 10 months. It said the probe would initially focus on, but it also called on app providers to report any issues with Google's Play Store.

Google GOOGL "Apps have increasingly become important parts of our daily lives," said the regulator, which added that it "expects Apple andto exhibit fair and transparent behavior."

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