Armed Myanmar soldiers and police are using TikTok to deliver death threats to those protesting against last month's coup, researchers have said, leading the Chinese video-sharing app to announce it was removing content that incites violence.

Digital rights group Myanmar ICT for Development (MIDO) said it had found more than 800 pro-military videos that menaced protesters at a time of increasing bloodshed — with 38 protesters killed on Wednesday alone, according to the United Nations.

"It's just the tip of the iceberg," said MIDO executive director Htaike Htaike Aung, who said there were "hundreds" of videos of threatening uniformed soldiers and police on the app.