A man was arrested for poisoning his wife with cyanide, causing her death in Karnataka. The couple had a strained relationship due to the husband's extra-marital affair. The husband confessed to adding cyanide to his wife's food during the interrogation. Minor injury marks were found on the wife's body, leading the family to suspect foul play. A murder case was filed, and the husband was apprehended. The forensic experts' report is awaited to determine the specific chemical used.