While her grandmother was engaged in spraying pesticide in the plantation, the girl was playing with another girl and fell into a nearby pond.
The Kumily police had arrested 52-year-old Vijayan alias Kannan, a resident of Mel Vazaveedu near Kattappana, on May 3 in connection with the sexual assault of two minor girls in April.
Vijayan, who was absconding ever since the complaint was filed, was arrested on May 3 on a tip-off received by Kumily Circle Inspector Jobin Antony.
According to Peermade Deputy Superintendent of Police Sanil Kumar CG, a preliminary probe revealed no foul play in the death of the girl and it looked like she had accidentally fallen into the pond.