Demanding fair trial, she said the nation will never accept the trial of the case based on the flawed and incomplete investigation.

Addressing the 'Blue for Peace' programme at Motijheel in the city, Asma called on the people of greater Sylhet, including Habiganj, to wage the toughest movement when the proceeding of the case begins at the Speedy Trial Tribunal in Sylhet.

"The soul of my husband would not rest in peace until the masterminds are brought to justice," she said.

She also vowed to continue the peaceful protest programme unless the real killers are punished.

Wearing blue dress, family members of Kibria and members of the civil society took part in the 'Blue for Peace' programme initiated by Asma Kibria.

Employees and officials of different banks and institutes at Motijheel also joined the programme spontaneously.

Kibria, also an Awami League lawmaker, was killed in a grenade attack at Boiddyerbazar in Habiganj on January 27 last year.