UK authorities are on "high alert" following riots in several regions sparked by a mass stabbing attack on 29 July. Officials have blamed misinformation spread on social media about the suspected perpetrator of the attack for fuelling the disorder. Prime Minister Keir Starmer warned Friday that UK authorities must "stay on high alert" in the coming hours and days, amid fears of further far-right riots in English towns and cities. Officials have blamed misinformation spread on social media about the suspected perpetrator for fuelling the disorder. "We're going to have to look more broadly at social media after this disorder but the focus at the moment has to be on dealing with the disorder," Starmer said.