Indian officials said they believe Pakistan is somehow involved in the attacks on Mumbai -- a claim Islamabad denies -- but one official says it will be difficult to ascertain details before the situation is over, according to CNN.
"The preliminary investigation indicates that some elements in Pakistan are involved," said Pranab Mukherjee, the external affairs minister for Maharashtra state, where Mumbai is located.
"I can`t tell you the details since the investigation is going on," he said. "Until the investigation is complete, it will be difficult to say where they came from and how they came."
Indian Prime Minister Manmohan Singh also indicated that the gunmen came from the Pakistan`s largest city, Karachi, in a telephone call with his Pakistani counterpart Friday.
Karachi police have said they have no evidence the attackers departed from their city, and Pakistani Prime Minister Yousuf Raza Gilani said he would send the chief of his country`s intelligence agency to help with the investigation.
By Friday morning, authorities believed militants were still holed up in one of the luxury hotels and in a Jewish center in the city.
The following is what is known about the attacks:
• Gunmen arrived by boats at the Mumbai waterfront near the Gateway of India monument on Wednesday night, police said. The gunmen hijacked cars, including a police van, and split into at least three groups to carry out the attacks, according to police.
• One group headed toward the Cafe Leopold, a popular hangout for Western tourists, firing indiscriminately at passers-by on the street. The group then opened fire and lobbed grenades at the Chhatrapati Shivaji Terminus railway station, authorities said.
• As police rushed to the scene of the attacks, gunmen attacked the Cama Hospital for women and infants. Several people were killed at the hospital, and a standoff there lasted until Thursday morning.
• Two other groups attacked the Oberoi and Taj Mahal hotels, taking hostages there, police said. Police were reporting Friday that the standoff at the Oberoi was over.
• Gunmen also took hostages at the Chabad House, where several Jewish families live, police said. Rabbi Gavriel Holtzberg, the city`s envoy for the community, was being held inside with his wife, a member of the Hasidic Jewish movement said. Gunmen and hostages still were believed to be in the house Friday morning.
• Police said gunmen fired indiscriminately from the Chabad House. Stray bullets killed a couple in their home and a 16-year-old boy who stepped outside, police said.
• At the hotels, hostages or people who were trapped left at various times Thursday and Friday. Commandos entered both hotels, trying to flush out militants and rescue others.
• Early Friday, an Indian general told reporters that two or three gunmen, one of whom was wounded, remained inside the Taj hotel.
• An undetermined number of nonmilitants remained inside the hotels Friday morning, National Security Guards Director-General J.K. Dutt said. "There are some of them inside the rooms, and they are not prepared to open the doors," he said.
• Fire brigades battled blazes at both hotels. By early Friday, it appeared what had been a major fire at the Oberoi had been extinguished.
• By Friday morning, 146 had been killed in the attacks, including at least six foreigners, authorities said. An Italian and a Briton were among the confirmed dead. More than 300 people were wounded, including seven Britons, three Americans and two Australians.
• At least nine gunmen were killed in fighting with police by Friday morning. Also among the dead were 14 police officers and the chief of the Mumbai police anti-terror squad.
• CNN`s sister network in India, CNN-IBN, quoted police sources as saying there were about 26 gunmen.
• Authorities found 8 kilograms (17 pounds) of RDX, one of the most powerful kinds of military explosives, at a restaurant near the Taj.
• The Indian navy, stepping up patrols on the country`s western coast after the attack, was questioning the crew of the MV Alpha, a ship detained with the help of the Indian coast guard, British authorities said. The authorities said they believe the attackers` boats came from this ship, and that they believe the ship is from Karachi, Pakistan.
• Several Indian news outlets report a group called the Deccan Mujahedeen e-mailed them to claim responsibility. Intelligence officials say little is known about the group. U.S. officials and security analysts say the sophistication of the attacks may indicate a more-established group is involved.
• State media Press Trust of India, citing Union Cabinet Minister Kapil Sibal, reported the gunmen had worked for months to prepare, even setting up "control rooms" in the two luxury hotels that were targete
