Shreemaya Swanr Sharma, 72, of the VDC was killed in the incident.
Police held her 40-year son, Lok Nath, after the local villagers suspected his involvement in the case. They said that Lok Nath might have killed his mother giving electric shock.
We held him for the investigation after he refused his involvement in the case, said Police Inspector Chiranjivi Dahal.
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