Transport links in east London have been disrupted after violent clashes broke out Thursday morning between Extinction Rebellion activists and commuters.
A dramatic footage showed commuters dragging an activist from the roof of a London Underground train.
"Arrests have already been made and officers are working to quickly resume services," the police said in a statement.
Extinction Rebellion launched a wave of protests on October 7 to highlight the risks posed by climate change.

Lebanon, Israel conclude US-brokered talks in Rome
US launches new round of strikes against Iran
Zelenskyy endorses energy boss as new Ukraine prime minister
Trump resumes Iran port blockade, threatens strikes on energy targets
