Hours after India handed over evidence linking elements in Pakistan to the Mumbai terror strikes, Islamabad on Monday assured the United States that it was examining the information and would frame a formal response soon.

Pakistan's top political leadership informed this to visiting US Assistant Secretary of State Richard Boucher.

Boucher's arrival today morning coincided with the handing over of evidence by India about the terrorist attacks in its financial hub that killed more than 180 people.

Though there was no official word on Boucher's meetings with Prime Minister Yousuf Raza Gilani and Foreign Minister Shah Mehmood Qureshi, official sources were quoted by TV channels as saying that the Pakistani leaders had informed the US diplomat that the government is examining the information received from India.

Islamabad's formal response would be framed shortly, the sources said.

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

Boucher discussed the regional security situation in the wake of the Mumbai attacks with Gilani and Qureshi. Bilateral relations, the situation along the Pakistan-Afghanistan border and an anti-militancy operation launched by Pakistani security forces in the Khyber tribal region also reportedly figured in the discussions.

Qureshi was initially scheduled to participate in Boucher's meeting with the premier but stayed back in the Foreign Office to study the information provided by India on the Mumbai attacks.