The Tamil National Alliance said it demands an international investigation into the crimes committed by the Sri Lankan government, after the UN accepted it failed to protect Tamils.
Spokesperson MA Sumanthiran told AFP on Thursday that the TNA wanted immediate action.
"Now that the UN has come with this report we want action."
"There should be an international inquiry. The government as the main accused party cannot be involved in the investigation."
"We would like to see reparations, restitution and justice for the people who suffered," he added.
"No one can say that these allegations should not be investigated."