Pakistan has agreed to a 48-hour timetable set by India and the United States to formulate a plan to take action against Lashker-e-Toiba and to arrest at least three Pakistanis, who Indian authorities say are linked to the multiple attacks in Mumbai, a top US daily reported on Saturday.
A top Pakistani official, who spoke on the condition of anonymity because of diplomatic sensitivities, said India has also asked Pakistan to arrest and hand over LeT commander Zaki ur-Rehman Lakhwi and former chief of Pakistan's spy agency Inter-Services Intelligence Hamid Gul, in connection with the probe into Mumbai carnage, which killed nearly 200 people, the Washington Post reported.
Pakistani President Asif Ali Zardari, who has expressed his country's solidarity with India, is expected to review plans by his nation's top military and intelligence officials and follow through on India's demands, the official said.
"The next 48 hours are critical," the official was quoted as saying by the influential US daily.
A week after the terrorist assault in the Indian financial capital, Indian officials have stepped up their efforts to prove the link between the carnage and Pakistani elements. According to the Post, a high-level source in the Indian government, speaking on the condition of anonymity, said India has 'clear and incontrovertible proof' that LeT carries out the attacks and that the group's leaders were trained and supported by Pakistan's ISI.
"We have the names of the handlers. And we know that there is a close relationship between the Lashkar and the ISI," the source said.
Indian and US investigators have identified Yusuf Muzammil, a LeT leader, as the mastermind behind the attacks, and US Secretary of State Condoleezza Rice has asked Pakistan to hand him and other suspects over, the report said.
Coverage: Attack on Mumbai
Pak ready to work closely with India: Gilani
More evidence points at Pakistan
European Parliament slams Pakistan over Mumbai terror attack
Act now, or we will step in, US warns Pakistan