Police arrested five activists of Bangladesh Chhatra League on Monday night over throwing the principal of Rajshahi Polytechnic Institute into a pond on the campus.
The arrested are suspended BCL joint secretary and the prime accused in the case Kamal Hossain Sourav, Murad, Shanto, Salman alias Tony and Rayhanul Hasan Hasib.
Golam Ruhul Kuddus, additional deputy police superintendent of Rajshahi Metropolitan Police, told UNB that they arrested the five BCL men near Bismillah Petrol Pump in Belpukur area of the city on Monday night.
With them, 17 accused have so far been arrested in the case.
Earlier on November 2, a group of BCL activists threw their principal Farid Uddin into a pond on the campus for his refusal to allow two students to fill up forms for examination for inadequate class attendance.
The Principal filed a case against 57 with Chandrima police station in the metropolitan city.
Bangladesh Technical Education Board formed a three-member probe body over the incident with department director SM Ferdous Alam as the head.