One of the girls, 15 year old Aparna died after eating the fruits and the other three have been hospitalized in the southern state of Kerala which is run by the Sports Authority of India (SAI).
The girls were found unconscious in their hostel at the sports institute late on Wednesday. They were rushed to the hospital where one girl was pronounced dead and the other three remain in a critical condition.
Officials said it was too early to speculate on the reason for the suicide pact by the teenagers who were training as rowers but the victims' relatives say the girls were mentally harassed by senior athletes and coaches at the institute.
The girls were all rowers and an inquiry into their deaths has been ordered.