Video sharing platform TikTok said it has uncovered and shut down a covert influence operation targeting Ireland.
The network had 72 accounts and more than 94,000 followers.
TikTok said the operators of the accounts posted divisive views in a bid to intensify social conflict.
The details are contained in a report submitted to the European Commission by TikTok as part of an EU Code of Practice on Disinformation.
The submission relates to the period January 2023 - June 2023.
"The individuals behind this network created inauthentic accounts; hyper-posted content with divisive views related to nationalism in Ireland, Japan, Russia, and Taiwan," TikTok said.
They also "hyper-posted comments with similar low -quality content in an attempt to redirect TikTok users off-platform and to intensify social conflict," according to the report.
TikTok said it also uncovered and shut down covert influence operations in Russia, Poland and Germany.
TikTok, Google, Microsoft and Facebook and Instagram parent Meta all signed up to the voluntary EU disinformation code last year, but Twitter, now known as X, dropped out after Elon Musk bought the platform.
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The EU has described X as the biggest source of fake news and urged Mr Musk to comply with new EU laws aimed at combating disinformation.
X is "the platform with the largest ratio of mis- or disinformation posts," said European Commission Vice President Vera Jourova.