SIRAHA; A mentally-retarded man killed his wife by using a sharp weapon here at Bastipur-8 of Siraha district.
Ram Bilas Mahara took the life of his wife Runa Devi Mahara at his home on Saturday evening.
Police confirmed that Ram Bilas hacked her wife to death.
As the murderer has fled the scene after the incident, the reason behind the murder is yet to be established, said police.
Runa Devi is survived by two sons.