Mahatma Gandhi was assassinated on 30 January 1948 at age 78 in the compound of Birla House (now Gandhi Smriti), a large mansion in central New Delhi. His assassin was Nathuram Vinayak Godse, a Chitpavan Brahmin from Pune, Maharashtra, a Hindu nationalist, a member of the Rashtriya Swayamsevak Sangh (RSS), a right-wing Hindu paramilitary organization as well as a member of the Hindu Mahasabha. Godse considered Gandhi to have been too accommodating to Pakistan during the Partition of India of the previous year. Godse tried to assassinate Gandhi two times in 1944 but failed.

Sometime after 5 p.m., according to witnesses, Gandhi had reached the top of the steps leading to the raised lawn behind Birla House where he had been conducting multi-faith prayer meetings every evening. As Gandhi began to walk toward the dais, Godse stepped out from the crowd flanking Gandhi's path, and fired three bullets into Gandhi's chest and stomach at point-blank range. Gandhi fell to the ground. He was carried back to his room in Birla House from which a representative emerged sometime later to announce his death.

Godse was captured by members of the crowd—the most widely reported of whom was Herbert Reiner Jr, a vice-consul at the American embassy in Delhi—and handed over to the police. The Gandhi murder trial opened in May 1948 in Delhi's historic Red Fort, with Godse the main defendant, and his collaborator Narayan Apte, and six more, deemed co-defendants. The trial was rushed through, the haste sometimes attributed to the home minister Vallabhbhai Patel's desire "to avoid scrutiny for the failure to prevent the assassination." Godse and Apte were sentenced to death on 8 November 1949. Although pleas for commutation were made by Gandhi's two sons, Manilal Gandhi and Ramdas Gandhi, they were turned down by India's prime minister Jawaharlal Nehru, deputy prime minister Vallabhbhai Patel and the Governor-General Chakravarti Rajagopalachari. Godse and Apte were hanged in the Ambala jail on 15 November 1949.