Britain's competition watchdog is planning a formal investigation into e-commerce giant Amazon.
That's according to the Financial Times on Thursday (June 10), citing three people familiar with the situation.
The newspaper said the Competition and Markets Authority had been analysing Amazon's business for months.
Focusing on how the online retailer uses the data it collects on its platform.
The report added that the regulator is scrutinising how Amazon decides which merchants appear in the crucial 'buy box'.
That's the white panel to the right-hand side of a product where buyers click to add the item to their cart.
And whether they favour sellers who use Amazon's logistics and delivery services.
Amazon did not immediately respond to a request for comment on Thursday.
The probe follows similar investigations into Amazon being conducted by the European Union.