The Hamburg commissioner for data protection and freedom of information ordered Facebook to stop gathering and storing info obtained from the popular messaging app, and delete all records it's obtained from German users, according to Reuters.
The German privacy regulator accused Facebook of misleading the public after WhatsApp and Facebook assured customers that data wouldn't be shared between them. The US and regulators in the EU are also looking into changes in the privacy settings of WhatsApp.
Facebook did not immediately respond to CNET's request for comment. The company told Reuters it's working with the Hamburg regulator to resolve concerns.