PATNA, Feb. 4 -- A team of Kolkata Police and Patna Police has arrested a man from Bihar's capital Patna in connection with the murder of Jharkhand actor Riya Kumari, who was shot dead by unidentified assailants near Kolkata on December 28 last year while she was going from Ranchi to West Bengal's capital along with her filmmaker husband and their two-and-a-half-year-old daughter....