The UN team, which has been put together to investigate allegations against the Sri Lankan government and the LTTE, will be holding hearings in New York, Geneva and Bangkok.
UN sources told Indian Express that the team constituted by the Office of the High Commissioner for Human Rights, would of course seek permission to hold sittings in Sri Lanka.
But it is unlikely to get it as the Lankan government has rejected any international probe.
The report says that Tamils living in Lanka would be interacting through telephone, video conferencing and skype.
It is also stated that to protect witnesses against intimidation, the UN team might keep their identities secret for 20 years as the earlier Darusman panel on Sri Lanka did.