Dhanbad, July 12 -- Giridih district police claimed to have solved the murder of a 24-yr-old youth by arresting his brother-in-law, who allegedly killed him over an affair with the victim's fiancee, officials said on Saturday. According to police, the accused had been in a relationship with his sister-in-law ( wife's sister) for nearly two-and-a-half years. Investigators said he allegedly feared that her marriage would end their relationship and planned the murder to prevent the wedding. The youth, working as a labourer in Rajasthan, returned to his native village on July 4 f or his wedding scheduled on July 7. His body was recovered from neighbouring Jamui district in Bihar on July 7. The body reached his village after the post-mortem on July 10, sparking protests and a road blockade by villagers demanding the immediate arrest of those responsible....