Published: Aug 11, 2011 12:21 PM EDT
Updated: Aug 11, 2011 4:14 PM EDT

LONDON (AP) - British Prime Minister David Cameron says his government is going to look to the United States for help in fighting gangs he blames for helping spark Britain's riots.
 
Cameron told lawmakers he would look to cities like Boston for inspiration in how to tackle gangs. He also mentioned former Los Angeles and New York Police Chief Bill Bratton as a person who could help offer advice.
 
Britain has been shocked by four nights of rioting that has spread across the country and led to hundreds of arrested.
 
Cameron told Parliament his government is "acting decisively" to restore order. He said the government, police and intelligence services are looking at whether there should be limits on social media sites like Twitter and Facebook that have been used to spread disorder. Promising tough measures to stop further violence, Cameron says "nothing should be off the table."