Hansda was fatally wounded .
Assailants in pursuit of Lakhai Hansda , Vice President of the Jharkhand Mukti Morcha state political party , threw a grenade at him and fled .
Vice President was fatally wounded .
Assailants in pursuit of Lakhai Hansda , Vice President of the Jharkhand Mukti Morcha state political party , threw a grenade at him and fled .