Making it clear that India wanted the United States to put pressure on Pakistan on Mumbai attacks, Prime Minister Manmohan Singh [Images] on Friday said it was the 'obligation' of the world community to ensure that perpetrators of the 'horrible' crime are brought to justice.

Dr Singh said India will await the 'outcome' of its message to the world before deciding on future course of action with regard to Pakistan.

"I have impressed upon all the world leaders who called me that people of India feel a sense of hurt and anger as never seen before," he told a joint press conference addressed along with Russian President Dmitry Medvedev in New Delhi [Images].

"It is the obligation of all concerned to ensure that perpetrators of this horrible crime are brought to book. That is our message to everybody and anybody who have come here," Singh said.

His response came when asked whether India had requested US Secretary of State Condoleezza Rice [Images], during her visit to New Delhi on Wednesday, to tell Pakistan to arrest Lashkar-e-Tayiba chief Hafiz Mohd Saeed.

Underlining that 'perpetrators of this crime should be brought to book', the prime minister said this message had been conveyed to Rice.

"We will wait for the outcome," Dr Singh said, when asked what options India was considering militarily, politically and economically with regard to Pakistan.

Rice, who met the prime minister besides External Affairs Minister Pranab Mukherjee during her visit to New Delhi, was provided with evidence about involvement of Pakistani terrorists in the Mumbai attacks.

The US has also independently collected evidence, which points to involvement of Pakistan-based terrorists. Making a veiled reference to Pakistan, Dr Singh said India as 'other relevant countries have come to the same conclusion that territory of a neighbouring country has been used for perpetrating this crime (in Mumbai)'.

"We expect the world community to recognise. We expect the international community to wake up and recognise that terror anywhere and everywhere constitutes a threat to world peace and prosperity," the prime minister said.

He said he conveyed the 'sense of anger and outrage' in India over the Mumbai attacks to the Russian President during their talks.

"We both agreed that these attacks represent a threat to all open and pluralistic societies, and require a major intensification of efforts against supporters and perpetrators of terrorism anywhere in the world," Dr Singh said.

Medvedev expressed solidarity with India and said Moscow [Images] stood ready to work with New Delhi, using 'all avenues' and extending all possible assistance in the situation.

Dr Singh appreciated Russia's [Images] expression of solidarity with India at this moment.