Birmingham-born Gurkiren Kaur Loyal fell ill on a family holiday in Punjab and was being treated for dehydration at a clinic in Khanna when staff reportedly gave her a mystery injection.
The 8-year-old's parents claim her organs were then removed during a post-mortem to cover up the cause of death.
Gurkiren's mother, Amrit Kaur Loyal, has been campaigning ever since to have the organs returned to the UK.
Today's vigil in the schoolgirl's memory took place at Centenary Square in central Birmingham and her family have requested people to bring their own candles and wear an item of either red or pink clothing, which were Gurkiren's favourite colours.
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The Birmingham Coroner's Office has requested their return. The Indian authorities confirmed last month that Gurkiren's organs had been retained at the Government Medical College at Rajindra Hospital in Patiala for post-mortem tests.
But, two months after her death, her family say they have not been given any idea about how she died and have dismissed the hospital's claim that she was suffering from a brain infection.
Amrit Loyal and her husband, Santokh Singh, recently also arranged a meeting with UK Foreign Office Minister Hugo Swire in a bid to ramp up pressure on the Indian authorities.