Dhaka, Jan. 13 -- The former classmates and colleagues of Bangladesh Bank Assistant Director Dipu Sana alias Dipanwita Biswas, who died after being hit by a concrete block that fell from an under-construction site in Dhaka, have demanded a fair investigation into the incident and punishment for those responsible.

They also described her death as 'murder'.

The protesters pressed ahead with their demands at a rally organised by 'Bridge', an organisation initiated by Dhaka University's students from the 2005-06 academic year near the Raju Memorial Sculpture at the university campus at noon on Saturday.

Dipanwita, a native of Satkhira, was a student of the university's social science department in the 2005-06 batch. She was an employee at ...