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.

Israel and Hezbollah agree to ceasefire
US-Iran peace talks in Geneva called off, clouding prospects for lasting truce
Norway imposes near ban on AI in elementary school
UK PM Starmer vows to fight any challenge after leading rival Burnham wins big
Afghanistan says its forces hit militant hideouts in Pakistan, Islamabad denies claim
