Hundreds of people hit Delhi streets on Friday protesting against the Citizenship Amendment Act (CAA) throughout the day but one in Old Delhi turned violent in the evening with a car set ablaze outside a police station and pelting of stones by that security personnel described as "outsiders". Here are a few questions that are being investigated by Delhi Police: Who was behind the violence? The protest was being held in Central Delhi but why the residents of North Delhi took part? Take a look at full report.