Google is to deploy a staff of 10,000 to hunt down extremist content on its YouTube platform following recent criticism, the video-sharing site's chief executive told Britain's Daily Telegraph Tuesday.

Susan Wojcicki admitted in the broadsheet that "bad actors" had used the website to "mislead, manipulate, harass or even harm."

British Prime Minister Theresa May has put pressure on internet giants to root out online radical material following a spate of terror attacks, while YouTube last week pulled 150,000 videos of children after lewd comments about them were posted by viewers.