TikTok is facing a fresh European Union privacy investigation into user data sent to China, regulators said Thursday.The Data Protection Commission opened the inquiry as a follow up to a previous investigation that ended earlier this year with a 530 million euro ($620 million) fine after it found the video sharing app put users at risk of spying by allowing remote access their data from China.

Ireland's powerful Data Protection Commission has opened a new inquiry into TikTok over the storage of European users' data on servers in China, the regulator said on Thursday.

This new investigation follows a US$620 million fine levied against TikTok by Europe’s Data Protection Commission in May over other data transfer issues.