MUMBAI, India - Police searching a mound of baggage abandoned amid the carnage of the attack on Mumbai's main train station found two bombs yesterday - nearly a week after gunmen left them there - in a stunning new example of the botched security that has become a major issue in India since the three-day siege.

The discovery came as Foreign Minister Pranab Mukherjee said India was "determined to act decisively" after the attacks, saying the evidence was clear that the gunmen had come from Pakistan and that their handlers were still there.

According to a New York Times report, a former Defense Department official said U.S. intelligence agencies had determined that former officers from Pakistan's army and its powerful Inter-Services Intelligence agency helped train the Mumbai attackers.

But no specific links had been found between the terrorists and the Pakistani government.

Mukherjee's words, the strongest yet from the government, came as thousands of Indians - many calling for war with Pakistan - held a vigil in Mumbai to mark one week since the start of the rampage, which killed 173 people.

Secretary of State Condoleezza Rice, visiting as part of a U.S. effort to ease tensions in the region, urged that Pakistan act "transparently, urgently and fully," saying Islamabad had a "special responsibility" to cooperate with the investigation.

Police discovered the bombs while searching through about 150 bags that they believed had been left by the dozens of victims at the Chhatrapati Shivaji Terminus.

An officer found a suspicious bag and called the bomb squad, Assistant Commissioner of Police Bapu Domre said.

Inside were two 8.8-pound bombs, which were taken away and safely detonated, he said.

Shortly after the attacks, police had found unexploded bombs at several of the targeted sites, including two luxury hotels and a Jewish center.

It was not clear why the bags at the train station had not been examined earlier. The station, which serves hundreds of thousands of commuters, had been declared safe and reopened hours after the attack.

The discovery has added to increasing accusations that India's security forces missed warnings and bungled the response to the attacks, believed to have been carried out by militants in a group known as Lashkar-e-Taiba.

The Los Angeles Times, citing a person close to the investigation who requested anonymity, reported that investigators think as many as 15 people were in the maritime hit team that struck Mumbai and that the gunmen, who departed from the Pakistani port city of Karachi, talked by cell phone with a Lashkar leader in Pakistan.

According to Western intelligence officials, Lashkar was formed in 1989 with the assistance of the Inter-Services Intelligence agency. How far that relationship extends today remains a topic of intense debate, Western officials said.

Mukherjee adopted a more strident tone yesterday against Pakistan, India's longtime rival.

"There is no doubt the terrorist attacks in Mumbai were perpetrated by individuals who came from Pakistan and whose controllers are in Pakistan," he said after meeting with Rice.

"The government of India is determined to act decisively to protect Indian territorial integrity and the right of our citizens to a peaceful life, with all the means at our disposal," he said, a turnaround from earlier statements that ruled out military action.

Rice strove to balance demands on both countries. She said Pakistan had a "special responsibility" to cooperate with India and help prevent attacks, here and elsewhere. At the same time, she warned India against hasty reaction that would yield "unintended consequences."

Rice said Pakistan had assured her it would cooperate with India in its search for those responsible for the slaughter in Mumbai. She said President Asif Ali Zardari, whom she will meet with today, "has told me he will follow leads wherever they go," but she made clear that Washington expected him to do so wholeheartedly.

Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, met yesterday with Zardari and top Pakistani military and intelligence officials, pushing them to "investigate aggressively" any ties between the Mumbai attacks and groups in Pakistan, a U.S. Embassy statement said.

Many Indians wanted more than just words. At the candlelight gathering in Mumbai, the mood was largely belligerent, with many calling for war. "Something has to be done. Pakistan has been attacking my country for a long time," Rajat Sehgal said. "If it means me going to war, I don't mind."

Others chanted anti-Pakistan slogans and held banners reading: "Enough is enough. Go for war." Similar rallies were held in cities across India.

Amid the cries for war, Indian Defense Minister A.K. Antony summoned the army, navy and air force chiefs to warn them to be prepared for terrorist attacks from the air and the sea in the wake of growing criticism about slack security.

Early today, media reports said airports were put on high alert after intelligence warnings that terrorists planned attacks on an airport in the next few days. The Press Trust of India news agency, quoting unidentified sources, said "specific" information regarding planned attacks had been received.

This article includes information from the New York Times.