Professor Md Amjad Hossain, senior teacher of English Department of Ideal College, has been made acting principal of the college.
Segupta Islam, chairman of the same department of the college, confirmed the matter.
Earlier, three teachers including principal Md Jasim Uddin Ahmed of Dhanmondi Ideal College in the city have been suspended for their alleged involvement in various irregularities and controversial activities.
Apart from the principal, Marketing Department's teacher Toufique Aziz Chowdhury and Bangla Department's teacher Tarun Kumar Ganguly were suspended for three months.
On June 4, teachers, students and employees of the college staged demonstration and demanded removal of its principal and three other teachers, bringing allegations that Jasim had obtained a fake PhD degree and has involved in financial corruption and irregularities.
Later, the college governing body suspended principal Jasim Uddin and two other teachers.
Besides, a committee was formed to probe the allegations surfaced against them.