The four are Penang DAP Deputy Chief Minister 2 P Ramasamy, Sungkai assemblyperson A Sivanesan and two other Hindraf activists, V Ganabatirao and K Vasanthakumar. Ganabatirao is also a DAP member.
They were said to have made defamatory statements which were published in English and Tamil dailies as well as in news portals, including Malaysiakini.
The articles called in to question Waythamoorthy's sincerity and asked him account for an alleged RM700,000 that was collected for the Hindraf cause.
The articles included a Malaysiakini interview with Ganabatirao entitled, Hindraf: Where's the money, buddy? and one in which Sivanesan asked Waythamoorthy (right) to account for allegedly RM700,000 of Hindraf funds.
Following these statements, Waythamoorthy did threaten to sue all three DAP members in August this year.
The demand letter was sent to the four via his lawyers Kumar, Hashimah & Co. Waythamoorthy wants them to retract their statements and make an apology.
He also wants a written undertaking that the four would not make similar allegations in the future and want the respondents to pay indemnity costs.
Schism within Hindraf
Waythamoorthy, Ganabatirao and Vasanthakumar along with M Manoharan, P Uthayakumar and R Kenghadharan were key individuals behind the Hindraf rally on Nov 25, 2007.
All five, excluding Waythamoorthy, were detained under the Internal Security Act. Waythamoorthy was on a pilgrimage in India, before imposing self-exile.
During the ISA detention of the five, Waythamoorthy carried the Hindraf mantle in the international arena.
All of them have been given a week to to respond to the demand letter.