Ramaswamy said Waythamoorthy went to London about two years ago but was yet to file the case seeking compensation from the British government for failing to consider the rights of the Indian community during independence talks.
Stating that it was Waythamoorthy's duty to reveal the expenses incurred so far, Ramasamy said 'he must be brave and return to Malaysia to fight for the people's rights', The Star newspaper said.
The jailed Hindraf leaders were released by Prime Minister Najib Tun Razak earlier this year in what he called 'a spirit of reconciliation'.
Two million-plus ethnic Indians form eight percent of Malaysia's 28 million population.