CHENNAI: The Chengalpattu police arrested a 16-year-old boy on charges of rape and culpable homicide a day after a tribal woman was found dead. The deceased, a 48-year-old woman from the Irular community, went missing on Thursday and was found dead the next morning. Police said the deceased was in a relationship with the boy. The woman’s postmortem results could not confirm murder but revealed she had penetrative sex.