Residents in Leeds in the UK have been urged to stay away from the Harehills area of the city due to disorder.
Images on social media have shown vehicles on fire, including a bus.
According to West Yorkshire Police, officers were called to an incident at an address in Luxor Street, Harehills, at 5pm yesterday.
In a statement the force said that "officers attended and found an ongoing disturbance which involved some agency workers and some children".
It added that "more people started to attend the location and a decision was made to remove the agency workers and the children to a safe place.
"A crowd started to gather and more officers were requested to attend the area, where some pockets of disorder were occurring".
The UK Home Secretary and West Yorkshire MP, Yvette Cooper, said that she was "appalled by the scenes".
In a post on social media site X, she said that she was "appalled at the shocking scenes and attacks on police vehicles & public transport in Leeds tonight. Disorder of this nature has no place in our society. My thanks go to West Yorkshire police for their response. I am being kept regularly updated".
