[4] However, Sivamaharajah and all other EROS MPs boycotted Parliament because of their opposition to the Sixth Amendment to the Constitution of Sri Lanka which required them to swear an oath unconditionally renouncing support for a separate state.

[6] Sivamaharajah was re-elected to Parliament as a Tamil United Liberation Front's (TULF) candidate in Jaffna District at the 2000 parliamentary election.

[15][17] Sivamaharajah was chairman of the Multi-Purpose Co-operative Society (MPCS) in Tellippalai and president of the Consortium of Valikamam North Public Organizations.

[3] He worked extensively to assist the tens of thousands of civilians forcibly expelled from the Valikamam North High Security Zone (HSZ) by the Sri Lankan military.

[3] On the night of 20 August 2006, at around 7.20pm, Sivamaharajah was shot dead at his temporary home in Tellippalai, which was located 300 meters inside the Valikamam North High Security zone during a curfew.