If you are looking for the most detailed account of this, you should search for "Veerappan: Chasing the Brigand" by K. Vijay Kumar (the IPS officer who led the operation). In Tamil, the book "Veerappan: Vazhkai Oru Vilayaattu" or similar titles by Vetri Maran or Nakkheeran publications are popular sources.
: Covers his childhood, the 1991 Special Task Force (STF) formation, and his final days. Review/Summary Read the Book Review on Bookday "The End of Veerappan" (Operation Cocoon) veerappan valnthathum veelnthathum pdf
: Unlike some sensationalized media, Sivasubramaniam explicitly dedicates the work to the people who suffered due to Veerappan's actions and the subsequent police investigations. If you are looking for the most detailed
The "Valnthathum" and "Veelnthathum" PDF documents offer a glimpse into the inner workings of Veerappan's organization, revealing a complex web of loyalty, deception, and violence. While the authenticity of these documents remains unverified, they serve as a reminder of the notorious bandit's enduring legacy and the impact of his crimes on the people of India. : Covers his childhood, the 1991 Special Task