Local sources said, there has been a longstanding conflict between Abdul Latif, the headmaster, and Golzar Hossain Mintu, former president of the committee.
According to the sources, since the tenure of the committee expired of late, a convening committee was formed with the Upazila Nirbahi Officer (UNO) Shaheen Alam as its head.
The incident left Golzar furious as he could not retain the post. He out of his anger first attacked Latif on Sunday when he was on his way to the school. Luckily, the headmaster managed to escape the attack, the sources further said.
Along with his hired goons, Golzar yet again swooped on the school teacher and his colleague named Indrojit Kumar while on their way to the school, injuring the duo critically.
Makbul Hossain, officer-in-charge of Kaliganj police station, local people rescued the teachers and whisked off them to hospital.
The UNO said he received the news, adding that proper action would be taken soon against Golzar and his aides. However, police were yet to arrest anybody in this connection till the filing of the report at 9:25pm.