NEW DELHI: India on Tuesday accused Islamabad of delaying its investigation into the Mumbai attacks, which have been widely blamed on militant groups based inside Pakistan, AFP reports.

The charge came a day after Islamabad said its investigators needed more information from India to complete its probe into the November 26-29 siege in which 165 people were killed by 10 gunmen.

India's junior foreign minister, Anand Sharma, said New Delhi had sent its own detailed report on the attacks to Pakistan, and that it expected a swift response.

‘The identity of the individuals and the perpetrators of those who masterminded these dastardly attacks is fairly well known to Pakistan, to India and to the entire international community,’ Sharma told reporters.

‘The organisations too stand identified and named at the United Nations Security Council itself,’ he said, without naming the Pakistan-based Lashkar-i-Tayiba (LeT) militant group at which fingers have been pointed.

The LeT has denied involvement but Sharma demanded action from Pakistan, which has fought three wars with India since independence in 1947.

‘What is required of Pakistan is that it should not delay, deflect or confuse but act,’ Sharma told reporters in New Delhi.

Meanwhile, Indian Home Minister Palaniappan Chidambaram on Monday dismissed Pakistan's statement that India's evidence on Mumbai attacks was inadequate and said the allegation was ‘rubbish.’

Addressing reporters in Kerala Mr Chidambaram said ‘It is rubbish to say the evidence is not sufficient. We gave them the dossier and they have to respond.’

He said India was awaiting Pakistan's response to the dossier it had submitted. He also said that Pakistan continued to talk through unofficial lines despite there being enough official channels.

Later talking to newsmen in Mumbai after a meeting reviewing the security situation in Maharashtra, Mr Chidambaram again spoke of India waiting for a reply. ‘We have given them a dossier. Let them respond to it. I will comment after they give the response,’ he said.