The American and Australian Embassies received anonymous threats last week warning that they would be attacked if the executions were carried out.  Analysts, however, said a major attack was unlikely because the bombers’ group, Jemaah Islamiyah, a regional terrorist network linked to Al Qaeda, has been seriously weakened. Since the government began an intensive counterterrorism campaign after the bombings, it has killed or arrested most of the organization’s top leaders.  The bombers are the first Muslim extremists to be executed under new laws passed here in 2003 that impose the death penalty for terrorist attacks.  The bombers, who had been the public face of Jemaah Islamiyah since their arrests in 2003, writing and preaching from prison, had publicly said they were looking forward to their executions, which they expected would turn them into martyrs.  In a letter written several weeks ago and posted on a sympathetic Islamist Web site, Mukhlas said he felt no remorse for the killings. “I am neither afraid of prison nor the death penalty,” he wrote. “I am not content with lenience or freedom. And I was not mournful when accused of killing people in the path of God, and at this moment I’d proclaim: ‘In the name of God, I have won.’ ”  The Bali attacks, on Oct. 12, 2002, involved two major bombs: one set off inside a nightclub popular with Western tourists in the busy Kuta beach area and another in a truck outside a nearby club that killed dozens of people trying to escape. A third, smaller bomb exploded outside the American Consulate in Denpasar but caused no injuries.  Mukhlas had been the operational chief for Jemaah Islamiyah since 2001, according to police records, and he fought the Russians in Afghanistan in the 1980s. He recruited Amrozi, his younger brother, to help carry out the bombings. Another brother, Ali Imron, is serving a life sentence in the case.  Mr. Samudra, who was believed to have chosen the targets, has written that the attacks were to avenge the deaths of innocent Muslims at the hands of the West.  A version of this article appears in print on , on Page A8 of the New York edition with the headline: 3 Executed For Attacks That Killed 202 in Bali. Order Reprints| Today's Paper|Subscribe
Three men convicted in the 2002 bombings in Bali, Indonesia, that killed 202 people were executed by firing squad on a small prison island off western Java.