The Komagata Maru incident was an immigration dispute in which passengers aboard the Japanese steamship Komagata Maru were denied entry in Vancouver, British Columbia, Canada, on 23 May 1914. The 376 passengers (340 Sikhs, 24 Muslims and 12 Hindus from Punjab province, British India) were denied entry despite being British subjects under Canada's continuous journey regulation, which barred South Asian migration. Only 24 passengers were allowed to disembark, and the ship was forced to return to India under naval escort on 23 July 1914. Upon reaching Budge Budge, near Calcutta (present-day Kolkata) on 27 September 1914, the Indian Imperial Police attempted to arrest the group leaders, leading to violence in which police open fired and killed 20 passengers while others were arrested or imprisoned. The incident highlighted Canada's racially discriminatory immigration policies in the early twentieth century, later resulting in public apologies issued by government officials, and has been the focus of scholarship, public memorialisation, artistic and literary portrayals,