The PSA announced the programme on Thursday to press for their four-point demand.

The demands include resignation of CU Vice-Chancellor (VC) Professor AJM Nuruddin Chowdhury, arrest and trial of alleged JCD cadres involved in Thursday's attack, ensuring security of general students and fulfillment of the demands of students of Shamsunnahar Hall.

On the other hand, university authorities in an emergency syndicate meeting on Thursday evening declared a one-month ban on rallies, processions, gatherings and political activities on the campus.

A six-member probe committee headed by Professor Mostafa Kamal Pasha of Botany Department was formed at the meeting to investigate the attack. The committee was asked to submit its report in 10 days.

The CU campus is tense due to PSA's siege programme and the concomitant countermeasures by university authorities. Many resident students were reportedly leaving the dormitories.

During a press conference at a local hotel, PSA leaders vowed to enforce the strike at any cost. They also announced a three-day agitation programme including a daylong countrywide student strike on Sunday, rallies at Central Shaheed Minar premises on Sunday and Tuesday, and a human chain programme on new market premises on April 10 to press for their demands.

Earlier yesterday morning, CU VC AJM Nuruddin Chowdhury visited leaders and activists of the PSA and JCD injured in Thursday's attack at Chittagong Medical College Hospital (CMCH).

Meanwhile, another attack on the campus Thursday night by Islami Chhatra Shibir left two students of forestry critically injured.

The injured students Shyamal and Mohtasem were admitted to the CMCH.

Students of the forestry department announced an agitation programme protesting the attack.