Three men of Pakistani descent died on Wednesday after being struck by a car during unrest in the city of Birmingham in central England. Reports said they were killed while attempting to defend their community against looters. According to police, one person has been arrested and a murder probe has been launched following the incident that took place around 1.00 am. Meanwhile, British Prime Minister David Cameron has vowed to take tough action to deal with the unrest. Police has been authorized to use water cannon and baton rounds against looters and rioters to prevent further riots.