Nov. 26-28, 2008:Terrorists perpetrate the Mumbai massacre. Gunmen who boat in from Pakistan land in the harbour and then fan out to attack civilian targets - including the Taj Mahal hotel, the Oberoi hotel, the Leopold Café, the Nariman House synagogue and the Chhatrapati Shivaji Terminus train station. The attacks leave 166 people dead, plus nine gunmen.
Nov. 29: Police say they have captured a tenth gunman, later identified as Mohammed Ajmal Kasab, 21. An official says Mr. Kasab is a Pakistani citizen and a member of the banned Lashkar-e-Taiba (Army of the Pure), which advocates for the end of Indian rule in the Muslim-majority region of Kashmir.
Nov. 28: The Pakistani government agrees to send a top intelligence official to India to answer allegations the attack is linked to Pakistan. Indian accusations centre on the involvement of Pakistani militant groups, especially Lashkar-e-Taiba or LeT, which Pakistan denies.
Nov. 30: For the first time, an Indian official says Pakistani militant group Lashkar-e-Taiba carried out the attacks. Meanwhile, India's top security official, Home Minister Shivraj Patil, resigns, saying he takes "moral responsibility" for the massive intelligence failure that let the attacks occur.
Dec. 2: Pakistan Prime Minister Yousaf Raza Gilani urges India to provide evidence Pakinstanis were involved in the attacks, promising to co-operate if proof is offered. India demands that Islamabad hand over 20 fugitives it says have taken refuge in Pakistan. Meanwhile, both the Indian and United States governments reveal they had intelligence that terrorists were plotting to attack Mumbai.
Dec. 3: Indian security officials say the lone surviving gunman, Mr. Kasab, says he was promised that his impoverished family would receive about $1,600 if he died fighting for militant Islam.
Dec. 5: Indian police say they arrested two men who helped the attackers get mobile phone cards they used to stay in touch during the rampage.
Dec. 8: Pakistan security forces arrest a suspected mastermind of the attack in a militant camp in Pakistani Kashmir.
Dec. 11: India announces a massive overhaul of its security and intelligence agencies, including creating an FBI-style national investigative agency, beefing up coastal security, better training for local police, strengthening anti-terror laws and increasing intelligence sharing.
Dec. 13: The Associated Press obtains Mr. Kasab's confession to police. He says the group originally intended to seize hostages and outline demands in a series of dramatic phone calls to the media. The also claims the assault was originally planned for Sept. 27.
Dec. 21: The Oberoi Hotel and the Taj Mahal reopen sections of their buildings to guests amid heightened security.
Dec. 31: Zarar Shah, a Lashkar-e-Taiba militant arrested in Pakistan, has confessed to involvement in the terror attacks, according to a Pakistani government official.
Jan. 5, 2009: India confronts Pakistan with a detailed dossier of evidence it claims proves that "elements from Pakistan" were behind the terrorist assault.
Jan. 6: Indian Prime Minister Manmohan Singh accuses Pakistan of involvement, saying Pakistani state agencies must have had a hand in the attacks.
Jan. 15: Pakistan says officials have arrested 124 people in a crackdown on groups allegedly linked to the attacks. Those arrested are leaders of Jamaat-ud-Dawa, a charity seen as a front for Lashkar-e-Taiba.
Feb. 12: Pakistan admits for the first time that the terror attacks were planned and launched from its soil. Officials announce they have eight suspects, including the alleged mastermind, six of whom are in custody and will be prosecuted. Most, or perhaps all, belong to LeT.
Feb. 25: India charges gunman Mr. Kasab with 12 crimes, including murder and waging war against India. If convicted, he could face the death penalty.
March 23: Court proceedings begin against Mr. Kasab, who says he doesn't have legal counsel and agrees to a government-appointed lawyer.
April 17: Mr. Kasab's trial begins.
May 4: Trial Judge M.L Tahiliyani rules that Mr. Kasab will be tried as an adult after his lawyer claims he was only 17 at the time of the attacks. Indian medical experts declare he is at least 20 after examining his teeth and x-rays of his bones.
May 6: Mr. Kasab pleads not guilty to all charges, saying: "I don't accept these charges." He also tells the court that he is 21 years old.
June 23: An Indian court issues arrest warrants for 22 Pakistani nationals accused of masterminding the attacks. The warrants require Pakistan to extradite the suspects, which it has vowed not to do.
July 20: In a surprise move, Mr. Kasab reverses his plea, telling the court he is guilty and giving a detailed account of the plot. He tells of spraying gunfire into the crowd at the train station and describes in detail a network of training camps and safe houses across Pakistan, revealing the names of four men he said were his handlers. Mr. Kasab says he confessed because the Pakistani government acknowledged earlier that he was a Pakistani citizen, dealing a blow to his defence. "If Pakistan has accepted me as its citizen, then end this case and punish me for my crime," he says. "My request is that we end the trial and I be sentenced."
July 22: Mr. Kasab says he is ready to go to the gallows and wants no mercy from the court for his role in the attack. "Whatever I have done, I have done in this world. It would be better to be punished in this world. It would be better than God's punishment. That's why I have pleaded guilty," he tells the court. He also says: "If I am hanged for this, I am not bothered. I don't want any mercy from the court. I understand the implications of my accepting the crime."
Nov. 16: Canadian officials say they are helping investigators with their probe, including the possible involvement of Tahawwur Hussain Rana, a Canadian immigration consultant who was arrested in Chicago in October with alleged U.S. accomplice, David Headley. Indian officials suspect the men helped scout targets before the attacks. (U.S. prosecutors also allege the men hatched a plot to kill a Danish journalist who published cartoons depicting the Prophet Mohammed.)
Nov. 21: Italian police arrest a Pakistani father and son who allegedly set up a phone network that was used by the militants.
Nov. 29: Mr. Rana denies involvement in the attacks.
Dec. 7: U.S. prosecutors charge Mr. Headley with conspiring to bomb and murder Indians and Americans in relation to the attack. The FBI alleges Mr. Rana provided Mr. Headley with a means of masking his terrorist intent by helping him pose as an immigration consultant.
Dec. 18: Mr. Kasab retracts his confession, saying police tortured him into admitting his role in the attacks. He says he came to Mumbai as a tourist and was arrested 20 days before the siege began. On the day the attack began, Mr. Kasab says police took him from his cell because he resembled one of the gunmen, shot him to make it look like he had been involved in the violence and re-arrested him.
Jan. 14, 2010: An American federal grand jury approves charges against Mr. Rana in relation to the Mumbai attacks. He faces three charges of lending material support to terrorist conspiracies.
Jan. 25: Mr. Rana pleads not guilty to playing a role in the attacks.
March 18: In a plea agreement, Mr. Headley pleads guilty to laying the groundwork for the attack. In exchange for being spared any U.S. death penalty or future extradition to India, he agrees to testify against Mr. Rana.
April 26: Pakistan requests Mr. Kasab's extradition, saying it would facilitate the trial of a LeT commander.
May 3: Mr. Kasab is convicted of nearly all the 86 charges against him, including murder and waging war against India.
May 6: Mr. Kasab is sentenced to death.