Apple has taken legal action against Russia's anti-trust regulator.

That's according to the country's RIA news agency.

Russian authorities have accused the U.S. tech giant of failing to allow app developers to tell customers about different payment options when using its App Store.

The case was opened in late October.

Legal documents published on December 1 showed Apple as a claimant against Russia's Federal Anti-monopoly Service.

Forbes Russia quoted a FAS representative who said the proceedings related to a warning it issued to Apple on the matter in late August.

Neither Apple nor the FAS immediately responded to a Reuters request for comment.

It is not the first time Apple has faced pushback over its App Store rules.

In the United States in September a federal judge issued a ruling against the company.

That forced Apple to allow developers to send their users to other payment systems.