Social media app TikTok has taken down accounts that were posting propaganda videos for the "Islamic State of Iraq and Syria" (ISIS), AFP reported Tuesday (October 22nd).

TikTok, which is owned by Chinese firm ByteDance, claimed some 500 million users globally last year, making it one of the most popular social apps.

It allows users to create and share videos of 15 seconds and is particularly popular with teenagers.

An employee at TikTok told AFP that about 10 accounts were removed for posting the videos.

"Only one of those videos even had views that reached into double digits before being taken down," said the staffer, who declined to be named.

The videos featured corpses being paraded through streets and ISIS fighters with guns, according to the Wall Street Journal, which first reported the story on Monday.

The Journal said the posts were from about two dozen accounts, which were identified by social media intelligence company Storyful.

"Content promoting terrorist organisations have absolutely no place on TikTok," the company said in a statement.

"We permanently ban any such accounts and associated devices as soon as identified, and we continuously develop ever-stronger controls to proactively detect suspicious activity," it said.