Moreover , President J. R. Jayawardene did not enjoy the same warm relationship with Indian Prime Minister Indira Gandhi that he had enjoyed with her father , Prime Minister Jawaharlal Nehru . Thus , with the outbreak of Black July ethnic riots , the Indian government decided to support the insurgent groups operating in Northern Sri Lanka . From mid 1983 , on the instructions of Indira Gandhi , RAW began funding , arming and training several Tamil insurgent groups
Black July ethnic riots
Black July
Indian intervention in the Sri Lankan Civil War