They took over the HQ and kept paramilitaries at bay for 24 hours. They traded gunfire all Monday night and most of yesterday and shot seven men dead. They were finally cornered and died in a hail of bullets yesterday afternoon.
Even with Maulana Masood Azhar, whose release the hijackers are demanding, locked in Kot Bhalwal jail in Jammu, in the south of the state of Jammu and Kashmir, the devotion to the cause which he inspires continues to haunt Kashmir. The man at the centre of the hijacking drama is short - about five foot - bearded, paunchy, bespectacled and with no discernible charisma.
"Sallow complexion, stout build, round face, protruding belly, eyebrows joined, thick lips," read the description in his interrogation report after his arrest six years ago. Prison officers described him as "religious and unpretentious" but "a hard nut to crack".
Mr Azhar is not physically prepossessing. And, though notorious as a terrorist, neither is he a fighting man.
At the Islamic University in Pakistan in around 1990 he enrolled for a week-long arms training camp for holy warriors, but decided he was cut out for a different role.
Yet the hijacking of flight IC814 on Friday was at least the third attempt by Mr Azhar's comrades to force India to set him free. British citizens were among victims in the first two attempts. In June 1994 Kim Housego and David Mackie, young Britons on holiday in Kashmir, were abducted by terrorists demanding Mr Azhar's release. After international lobbying, they were freed unharmed a fortnight later.
In July 1995 six foreign trekkers, including the Britons Keith Mangan and Paul Wells, were seized in Kashmir. One of them, a Dutchman, was later found decapitated, and the others have never been seen again. It is widely believed they must be dead.
Last night the hijackers increased their demands to include the release of 35 Kashmiri militants held in Indian jails and $200m (pounds 125m) and the return of the body of one of Mr Azhar's comrades killed by Indian forces. But Mr Azhar remained central to the resolution of the stand-off.
A native of east Punjab, Pakistan, his CV is fairly typical of Muslims at the cutting edge of the jihad to "liberate" Kashmir, which has been in progress for 10 years. After deciding against becoming a warrior, he chose journalism, editing a magazine in Karachi for mujahedin.
He combined this with fund-raising trips that took him to Saudi Arabia, Africa, Britain and Mongolia. He emerged as a force to reckon with in Kashmir not long before his arrest. After procuring a Portuguese passport under a false name in Britain, he flew to Delhi then travelled to Srinagar, the Kashmiri capital. His arrival coincided with the first involvement in earnest of Pakistani mujahedin with the Kashmiri separatist struggle, which until then had largely been fought by native Kashmiris.
His task was to bring together two militant groups whose parent organisations in Pakistan had dictated that they merge, but whose soldiers on the ground were reluctant to do so. Mr Azhar's religious credentials and force of personality were expected to do the trick. But he was arrested: his car broke down and he and his companions had to switch to an auto rickshaw - and one of the companions panicked when spotted by police.
Indian journalists who met Mr Azhar after his arrest were not impressed. "He lacked both the charisma of a religious teacher and the macho image of a mujahed," said one. But when militants in Kashmir bemoaned the loss of Mr Azhar, journalists realised the police had been right to rejoice.
"Azhar remained calm and, despite many provocations, he never changed his tone," a reporter recalled. He told them that he was "a simple cleric" who had come to Kashmir to "preach religion". Less than a month later, however, he boasted to an Indian news service that "the Indian authorities cannot keep me in jail for long. My comrades will get me out". His confidence in their loyalty has proved well-founded.
24 December, 4.25pm local time: Flight IC 814 takes off for Delhi from Kathmandu with 189 people on board. Hijacked by five or six suspected Kashmiri militants. Lands at Amritsar, then flies on to a military base in the United Arab Emirates.
25 December: Hijackers release 27 and the body of one passenger stabbed to death. Aircraftflies to Afghan city of Kandahar. Hijackers offer to free all hostages in exchange for Maulana Masood Azhar, the Islamic religious leader held by India since 1994.
26 December: Erick de Mul, a UN official based in Pakistan, flies to Kandahar.
27 December: Threat made to kill hostages if demands are not met. Indian officials arrive and begin negotiations.
28 December: Pakistandenies involvement. India says demands include the release of 35 Kashmiri militants and pounds 125m.