The association leaders announced their decision as the 24-hour ultimatum given to the university authorities expired yesterday. They demanded that the JUJA office be reopened and handed over to the elected committee within 24 hours.

The association also demanded punishment to those involved in Monday's attack on its office allegedly by the JCD activists.

The attackers broke the lock of the office and assaulted the JUJA president. They also announced a new committee of the JUJA.

But without taking any action against the attackers, Proctor Saleh Ahmed Khan sealed the office on Wednesday.

The JUJA also submitted a written complaint to the central JCD committee against Sirajul Islam Siraj, a JCD leader and a JU correspondent of the Dinkal, who allegedly led the attackers on Monday night.

The association will stage a demonstration on the university campus today to press home their demand.

The association leaders also threatened to launch tough programme if the authorities do not meet their demands immediately.