Gunmen believed to be members of the Indigenous Peoples of Biafra (IPOB) stormed the Comprehensive Secondary School, Nkume in Njaba Local Government Area of Imo State on Monday and prevented students from taking their examinations.
Before the gunmen forcefully dispersed them, the students were preparing to sit for English in the ongoing Junior Secondary School Examination.
Teachers and students fled in different directions as the gunmen shot sporadically into the air.
Gunmen set ablaze some motorcycles belonging to some of the staff and students.
Despite no reports of casualties, a video of the incident showed students and staff shouting and running for their lives.
Police Public Relations Officer, CSP Mike Abattam, was unavailable for comment.
IPOB declared Monday as a sit-at-home day to drum support for the release of Nnamdi Kanu, who is facing some charges before an Abuja High Court.
As Kanu is scheduled to appear in court on Tuesday, the sit-at-home is expected to continue this week.
Kanu is also expected to appear in court on any day except Mondays, so the group declared sitting at home every day he is scheduled to do so.