One person died and two other sustained critical injuries in a knife attack at Prithvinagar of the district on Saturday morning. The deceased has been identified as 18-year-old Rajan Magar and injured as 19-yer-old Sanjay Limbu and 18-year-old Sanjay Urau (18) of Prithvinagar. According to police,20-year-old Sanjog Limbu of the same place had attacked them with a knife while they were sleeping at the tea garden of Krishna Subba. The injured are receiving treatment at the Bhadrapur-based Pathibhara Hospital, police informed. Police further informed that they have arrested Sanjog for investigation.