Jayalalitha was admitted to Apollo Hospital in Chennai on September 22, 2016. She was at the time suffering from fever and dehydration.
Jayalalithaa stayed in hospital for 75 days, and there has been much controversy over her death and when exactly it took place.
An inquiry commission led by a retired judge is currently investigating the death.
Divakaran's allegation was made while addressing a public meeting on the occasion of late chief minister and AIADMK founder MG Ramachandran's birth anniversary at Mannargudi in Tiruvur district of Tamil Nadu.