Maidul had been arrested in an ICT case filed for making 'derogatory remarks' on Prime Minister Sheikh Hasina on Facebook.
On October 9 last, the High Court granted a six-month bail to Maidul Islam in the case.
On September 24, Maidul Islam was sent to jail in the case filed by CU student Md Iftekhar Uddin Ayaz, a former leader of Bangladesh Chhatra League (BCL), with Hathazari Police Station under the Information and Communication Technology (ICT) Act on July 24.
Later, on September 25, the CU authorities suspended Maidul Islam in this connection.
On July 15, the Sociology teacher had to leave the campus along with his family following continuous threat reportedly from BCL activists over his Facebook post in support of the quota reform movement.
The BCL men also declared Maidul Islam and another CU teacher persona non-grata on the campus.