'Shameful' rioting in Greater Manchester
10 August 2011 Last updated at 06:47 BST
Hundreds of rioters have brought "shame on the streets of Salford and Manchester", Greater Manchester's assistant chief constable has said.
Fire bombs have been thrown at shops and looters have stolen clothes, electrical items and alcohol.
Assistant chief constable Garry Shewan said: "This has been senseless violence and senseless criminality of a scale I have never experienced in my career before."
Ed Thomas reports.