Kerala teen denies mother's alleged death as police probe murder in 15-year-old case
Soman, a labourer who had helped the police collect vital evidence from the septic tank on Tuesday, raised suspicion that some chemical substance was poured into the tank. 'I have been doing septic tank-related jobs for years. So, I can feel it when I get down into the tank if any chemicals are poured inside it. Here, some chemical, which can even powder stones and human bones, was poured', he said.