Thrissur, July 21: Leaving the reason for the death as a mystery, Arya K Suresh, the sole survivor among the Konni girls, succumbed to injuries on Monday.
Arya along with her two friends Athira and Raji was found missing on July 9.
The dead bodies of the latter two were found on a railway track near Malankara-Lakidi area railway track on July 13, where Arya was found seriously injured and was shifted to Thrissur medical college. The teenagers had allegedly attempted suicide and the reason behind it is yet to known.
The police and the investigation team were hopeful about Arya's recovery in giving some leads about the incident. It was after a week-long battle that the teenager succumbed to injuries, following a cardiac arrest.
Last week a minor improvement in her condition was reported, but the health deteriorated due to pneumonia.
According to Medical college Superintendent, Dr Balagopal Arya was on ventilator and she suffered a cardiac arrest at 3:30 pm and passed away at 4 pm.