A woman has been arrested in Nagpur for allegedly killing her husband, police said on Thursday. 28-year-old Swati Laxman Malik, the accused, was the fifth wife of 65-year-old Laxman Ramlal Malik. According to police, Laxman had disowned his younger son from Swati as he suspected her fidelity. On Monday, Swati allegedly met Laxman at his friend's office where he was staying after leaving home. She tied his hands behind a chair and they had sex, after which she allegedly slit his throat with a knife, police said. According to police, Laxman, who retired as sanitation worker from a hospital, did not get along with any of his five wives or his children.