Delhi High court on Monday sentence, Sajjan Kumar, a senior leader of India’s main opposition party the Indian National Congress (INC) to life imprisonment for inciting mob violence and rioting targeting members of the Sikh community in 1984 following the assassination of the then Prime Minister Indira Gandhi.

The court asked Kumar to surrender by December 31, said media reports. Gandhi was shot dead by her personal security-guard who belonged to the Sikh community.

Gandhi belonged to the INC and her sensational assassination had led to violence on the streets of Delhi and neighbouring states wherein enraged mobs targeted the Sikh community, killing many of them in the process. A number of INC leaders were accused of inciting mobs to kill the Sikhs.