Communist Party of Bangladesh (CPB) yesterday demanded re-investigation into the killing and trial of the killers of its former central secretary and Khulna district unit president Ratan Sen.

CPB leaders formed a human chain and held a rally in front of the National Press Club to mark the 18th anniversary of the leader's death.

They said anti-communist forces killed Ratan in broad daylight in 1992, when the movement against the killers and collaborators of 1971 was gaining pace.

Police identified the killers but they were later freed from charge during the then BNP-government, leaders said.

They said Awami League government gave assurance of reinvestigation into the case but no step has yet been taken.

CPB General Secretary Mujahidul Islam Selim, party leaders Ruhin Hossain Prince, Laxmi Chakravarty, Abdul Kader were among others present at the human chain.