Gangoli Devi Kusiyat Yadav succumbed to head injuries on the way to hospital after the attack that took place at around 2 a.m., according to Area Police Office Mirchaiya.
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Her daughter Dukhini sustained serious injuries on her head and is being treated at Birat Nursing Home in Biratnagar.
Police has arrested five in connection to the attack, according to police inspector Govinda Jha.
