The lower house of India's parliament is debating the findings of a controversial government inquiry into the 1984 anti-Sikh riots.
Sikh leaders and opposition politicians want action on the report
Opposition members are demanding the prosecution of members of the governing Congress Party over the riots in 1984.
The government says there is not enough evidence to prosecute a serving minister named in the report.
The riots, sparked by the assassination of Prime Minister Indira Gandhi by Sikh bodyguards, left more than 3,000 dead.
"I appeal to the prime minister to find out who was behind the carnage," opposition leader LK Advani said in parliament.
The 339-page inquiry report by former Supreme Court judge, GT Nanavati, was tabled in parliament on Monday.
It said that accounts from witnesses and victims of the rioting indicated that "local Congress leaders and workers had either incited or helped the mobs in attacking the Sikhs".
MPs from the opposition Bharatiya Janata Party and regional Sikh party, the Akali Dal, have called for the removal of Congress Minister for Non-Resident Affairs, Jagdish Tytler.
They also say that Prime Minister Manmohan Singh should resign because he had failed to take action against those held responsible for the riots.
The government has rejected the opposition demand, but says that it is prepared to hold a parliamentary debate on the issue.
The investigation found "credible evidence" against Jagdish Tytler, "to the effect that very probably he had a hand in organising attacks on Sikhs".
Some relatives have complained that the inquiry did not go far enough
The inquiry recommended further investigation into Mr Tytler's role.
Mr Tytler on Monday denied any involvement, saying all previous commissions into the riots had failed to mention his name.
"The Nanavati Commission has held the Congress party responsible for the killing of Sikhs," Sushma Swaraj, BJP spokeswoman said in the Upper House of Parliament.
Kuldip Singh Bhogal, leader of a group of victims of the 1984 riots, was not satisfied with the report.
"We have lost all faith in government. We were denied justice 21 years back and no justice has been given now," he said.
This inquiry is the latest of nine that have looked into the riots.
It was begun in 2000 amid dissatisfaction, particularly among Sikhs, with previous investigations.