(CNN) -- U.S. Secretary of State Condoleezza Rice has told Pakistan it expects complete cooperation in finding the perpetrators of the Mumbai attacks in neighboring India.
"What we are emphasizing to the Pakistani government is the need to follow the evidence wherever it leads," Rice told reporters traveling with her to London.
"I don't want to jump to any conclusions myself on this, but I do think that this is a time for complete, absolute, total transparency and cooperation and that's what we expect."
President George W. Bush ordered Rice to cut short her tour of European capitals this week to visit India after attacks spanning three days killed 179 people in the Indian commercial capital Mumbai.
The attacks have strained India's already tenuous relationship with Pakistan, which says India has yet to offer any proof to support allegations that a Pakistani-based Islamic militant group was behind the massacre.
One captured suspect has told police that he is Pakistani, Indian officials said. Sources told CNN's sister station, CNN-IBN, that the captive has said he was trained by Lashkar-e-Tayyiba, a Pakistan-based terror group allied with al Qaeda.
The suspect also said he and his fellow attackers were told to memorize Google Earth maps of Mumbai's streets so they could find their targets, CNN-IBN reported. Watch how investigators are focusing on the suspect »
But Rehman Malik, head of Pakistan's Interior Ministry, told CNN: "So far what has been shown has been unjust.
"If anybody has used our soil, I give assurance and I assure my friends and people from India that we will take action," Malik said.
In Washington, Pakistan's ambassador to the United States said the attacks could be a chance to improve cooperation and ease "the burden of history" between the longtime South Asian rivals, who have fought three major wars since independence and conducted tit-for-tat nuclear weapons tests in 1998.
"It's important to avoid miscalculations. It's important not to ratchet up tensions. It is important to understand that this is an opportunity for India and Pakistan to work together," Ambassador Husain Haqqani told CNN's "Late Edition with Wolf Blitzer" on Sunday.
Police in Mumbai, located in Maharashtra state, on Monday revised downward the death toll from Wednesday's attacks and the sieges that followed to 179 dead and about 300 wounded.
At least 28 foreigners were among the victims, including six Americans and eight Israelis. Victims share their tales of survival and escape »
The official death toll does not include at least nine gunmen killed in three days of battles with police and the Indian military, police said Monday.
A second Indian official offered his resignation Monday in the wake of the attacks. Vilasrao Deshmukh, chief minister of the state of Maharashtra where Mumbai is located, said he would leave it up to his ruling Congress party to decide whether his resignation would be accepted.
His announcement followed Sunday's resignation of federal Home Minister Shivraj Patil, who quit amid criticism of the response to the attacks.
Prime Minister Manmohan Singh accepted the resignation of Patil, the home minister, and named Finance Minister P. Chidambaram to take over the post.
Indian officials allege that in the 1990s, Lashkar-e-Tayyiba was a state-sponsored terror group used by the Pakistani government to get control of the disputed northern Kashmir region. Pakistan banned the group in 2002, after an attack on India's parliament that brought the two countries to the brink of war.
The Indian government is considering suspending the five-year old cease-fire with Pakistan and perhaps even ending the dialogue process with the country, CNN-IBN reported.
Pakistani security officials also told CNN that if tensions with India escalate, it may shift its military forces from the Afghan border east to prepare for any conflict.
Pakistan's new democratic government, which took office earlier this year, is battling its own insurgency along the rugged border with Afghanistan, where U.S. and NATO troops have been fighting al Qaeda and Taliban militants since al Qaeda's 2001 attacks on New York and Washington.
Haqqani said the militants want India and Pakistan to remain "at each other's throats so they can flourish," but he said his government has seen no sign of an Indian buildup along the border.
Interpol had said it would send a delegation to India to aid in the investigation. But on Sunday, the international law enforcement agency was still waiting official permission into the country, a spokesman said.
The targets of the attacks included luxury hotels packed with foreign tourists. The 105-year-old Taj Mahal hotel was the site of the attackers' final stand, as gunmen held hostages and refused to leave the facility. Watch the destruction left at the hotel »
CNN's Nic Robertson, Andrew Stevens, Mallika Kapur, Harmeet Shah Singh, Saeed Ahmed, Sara Sidner, Alessio Vinci, Reza Sayah and Paula Newton contributed to this report.