PM backs police to use water cannon and rubber bullets

• Let me be clear!Prime Minister David Cameron has said water cannon will be available to the police to deal with rioting, if needed.
• He also said baton rounds were already authorised for use by police.
• Mr Cameron was speaking following a meeting of the government's emergency committee, Cobra, which had been assessing a fourth night of rioting in cities across England.
• The worst trouble was in Manchester and Salford, where more than 100 arrests were made.
• Mr Cameron said every option was being considered and whatever resources the police need they would get.