They will also name former prime minister Abdullah Ahmad Badawi, Home Minister Hishammuddin Hussein and former inspector-general of police Musa Hassan and the government as the other defendants.
Manoharan(above, left) told Malaysiakini that they decided to cite Abdullah as a defendant as it was during the former premier's tenure that they were detained, while it was during Hishammuddin's tenure that they were finally released.
They also named Musa as he was the IGP who may have ordered their detention.
They claimed that their detention which began on Dec 13, 2007 was unlawful, where they had been kept for 514 days.
According to them, this was the first suit filed against Najib in his personal capacity as it was during his premiership that he had earlier decided to release some ISA detainees, and later released three Hindraf detainees including the two in May 2009.
The two, who are seeking RM100 million each, are scheduled to file the suit tomorrow at the Kuala Lumpur High Court civil registry.