It seems you are looking for a titled "Veerappan Valnthathum Veelnthathum" (வீரப்பன் வாழ்ந்ததும் வீழ்ந்ததும்) — which translates to "How Veerappan Lived and Fell" .
This is a famous in-depth narrative by (editor of Nakkeeran magazine), who had direct access to the sandalwood smuggler and bandit Veerappan. The article was published in Nakkeeran following Veerappan's death in 2004. veerappan valnthathum veelnthathum pdf