Wickremesinghe also announced that the Office of Missing Persons will lead the Truth Commission to probe the matter.
The prime minister said the Office of Missing Persons (OMP) would not institute any legal action in persecution but would deliver justice to the relatives of the missing people.
"We must have a closure to this issue. A closure is multi-faceted. The closure requires we address many issues, and take remedial action for a finish," he told the parliament.
The OMP is not a law enforcement or judicial agency but a truth-seeking investigative agency, Wickremesinghe added.
Also Read
He moved to repeal paragraph one of Section 11 in the original Bill approved by the Parliament last year.
The amendment seeks to repeal the general powers of the OMP to enter into such agreements, where necessary, with any person or organisation whether incorporated or otherwise, and whether domestic or foreign, including agreements securing assistance in obtaining information.
Without this legal recognition, the next of the kin also faces issues in accessing frozen assets and property deeds or being eligible for compensation and social welfare benefits, the government said last year.
Disclaimer: No Business Standard Journalist was involved in creation of this content