Sridhar Natarajan, 40, and Parmashu Jain, 8, were killed and four Indians were wounded, the external affairs ministry said.
India's external affairs ministry refused to comment on the leak other than to stress its continuing "candid" dialogue with the United States.
"We will write to the external affairs ministry, Prime Minister Manmohan Singh and Congress president Sonia Gandhi if the government doesn't cancel his visa," added Mr Nomani.
The spokesman for India's external affairs ministry, Syed Akbaruddin, who was traveling in South Africa, declined to comment on Mr. Terzi's resignation.
Neighbouring India's external affairs ministry said in a statement that it was concerned with the situation in several parts of Nepal, calling for dialogue "that would enable broad-based ownership and acceptance".
External affairs ministry spokesman Vikas Swarup said the decision to revoke Vijay Mallya's passport was taken considering the evidence gathered by India's Enforcement Directorate, which has been investigating the tycoon's massive debts.
Vikas Swarup, spokesman for India's external affairs ministry, said the attackers had asked the guard to open the gate on the pretext of visiting their mothers at the retirement home.
Gautam Bambawale, a joint secretary at India's external affairs ministry, conveyed his objections to the map and said he was told it was a mistake that would be rectified.
After battling the protesters throughout the day on Saturday, authorities yesterday banned their entry into the high-security zone of the capital, which also houses the offices of the prime minister and defence, home and external affairs ministries.
But the uniqueness of this programme, which gives me hope, is that before, international NGOs were doing projects, external to the ministry, but this is an initiative that's led by the ministry.
