Police on Thursday have arrested 57-year-old Prakash Thapa, father-in-law of the deceased, and 23-year-old Sita Thapa, sister-in-law of the deceased, on the allegation of murdering 22-year-old Susmita Thapa of Hetauda Sub-metropolitan-4. 

Susmita's body was found in the kitchen on June 16. Police informed that they found her body with a head injury and blood in the kitchen.  

A police official said that a preliminary police investigation revealed that they had committed the murder. Susmita's husband had died in a car accident six months ago.