India on Monday handed over to Pakistan evidence about involvement of elements based in that country in the Mumbai terror attacks and asked Islamabad to implement its commitments.

Stepping up the diplomatic offensive, External Affairs Minister Pranab Mukherjee said he has written to his counterparts around the world and that countries are being briefed separately giving details of the Mumbai attacks and its links in Pakistan.

"We have today handed over to Pakistan evidence of the links with elements in Pakistan of the terrorists who attacked Mumbai on November 26, 2008," Mukherjee told reporters in New Delhi.

Pakistan High Commissioner Shahid Malik was summoned by Foreign Secretary Shivshankar Menon to hand over the material.

Describing the Mumbai attacks as "unpardonable crime", Mukherjee asked Pakistan to implement the bilateral commitments it has made at the highest levels to India and practice its international obligations.

The evidence includes confession of Ajmal Amir Kasab, the lone Pakistani terrorist held during Mumbai terror strikes, records of GPS and satellite phones used by the attackers and transcript of conversations between the attackers and their handlers in Pakistan.

It also includes details about weapons and other articles recovered.

"This material is linked to elements in Pakistan. It is our expectation that the government of Pakistan will promptly undertake further investigations in Pakistan and share the results with us so as to bring the perpetrators to justice," the Ministry of External Affairs said in a statement.

"We are also briefing all our friendly countries," the External Affairs Minister said.

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