A man has been arrested for allegedly stabbing his sister-in-law with a knife to death in Moradabad, Uttar Pradesh. A case has been registered at Katghar Police Station and the accused, Imran is undergoing interrogation by the police." On Saturday evening, Imran murdered his sister-in-law Praveen by stabbing her with a knife. A case has been registered and interrogation is ongoing," said Superintendent of Police.