"Five officials including myself, the Deputy Superintendent of Police, and police personnel were injured in the stone-pelting incident by students," Deputy Commissioner Arunkumar Kembhavi told PTI.
The DC received injuries in his left wrist when students of Kiang Nangbah Government College at Jowai, the district headquarters, took out a procession without permission and gheraoed the DC's office.
The students had locked the gates of the college paralysing its functioning since yesterday forcing the police to intervene and break open the lock, the DC said.
Police used water canon, fired tear gas shells and then lathi-charged the students to disperse them, the DC said.
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According to unconfirmed reports, around 20 students were injured in the clash with security personnel and admitted in various hospitals.
He said no student in uniform and studying in class XI and XII should be found participating in any protest according to an order of the education department.
The DC said the administration is analysing video footages taken during the protest.