A Bangladesh Chhatra League activist was critically injured in an attack allegedly by his fellows at Jahangirnagar University yesterday.
Imran Khan Sohan, activist of Al Beruni (Extension) Hall unit, was hit with an iron rod on the head, said his classmates, who took him to Enam Medical College Hospital in Savar.
The bone of his right forearm was also broken, they quoted the doctors as saying.
Witnesses said around seven Shaheed Rafiq Jebbar Hall unit's BCL activists, who are loyal to BCL leaders Mazed Simanta and Nahid Hossen, attacked Sohan with iron rods and sticks in front of JU medical centre.
Earlier on Monday night, the attackers misbehaved with another senior BCL activist Razu Mahmud of Al Beruni Hall over a trifling matter, the witnesses said.
Later, some BCL men, including Sohan, protested the incident and slapped three of the group, they said.
Simanta admitted that his supporters attacked Sohan and misbehaved with Razu. He, however, denied his involvement in the incidents.
Acknowledging the facts, JU BCL President Jewel Rana said organisational actions would be taken against them after an inquiry.
Proctor Prof Tapan Kumar Saha said he would take actions after getting complaints.