Two persons killed while around two dozen were injured in police firing during the protest in Saptari on Saturday night.
The incident occurred at Bhardaha and Rupani along the East-West Highway of Saptari district. The aftermath of the clash between the protesters and police left two dead and several injured.
The deceased have been identified as Birendra Ram, 18, of Batanaha and Nageshwor Yadav, 27, of Jamuni.
Meanwhile, the local authority has imposed indefinite curfew since 6 am on Sunday.