Two hundred and fifty-seven people were killed in March 1993 when 13 car bombs went off at various points in the city, including the stock exchange. The attack, which also injured more than 700 people, came on the heels of Hindu-Muslim violence in the city in which many working-class Muslims were killed by Mumbai police. The attack was attributed to mob boss Dawood Ibrahim, allegedly as revenge for the large number of Muslims who were killed in the riots.