A woman was killed while a driver and three other sustain serious injury in freak road accident at around 2.pm yesterday. The incident happen when an Aris Tata collided with a tractor at Kshetri Leikai of Thoubal. The decease has been identified as Khangebam Jamini (55) wife of Kh. Khukil of Mongpok Sekmai Mayai Leika. The three others injured were in RIMS for further treatment.