A senior Indonesian al-Qaeda operative wanted in the 2002 Bali bombings has been arrested in Pakistan, a rare high-profile capture that could provide valuable intelligence about the organisation and possible future plots.
Umar Patek, a suspected member of the al-Qaeda-linked militant group Jemaah Islamiyah, was arrested this year in Pakistan, foreign intelligence sources said on Tuesday.
It is not clear whether Pakistan stumbled on Patek or his capture was the result of an intelligence tip. Details about what he was doing in Pakistan also remain murky, raising questions about whether he was there to plan an attack with al-Qaeda's top operational leaders as the 10th anniversary of the September 11, 2001, attacks on the United States approaches.
Patek, 40, a Javanese Arab, is well-known to intelligence agencies across the world. He is believed to have served as the group's deputy field commander in the nightclub bombings that left 202 people dead, many of them foreigners.
The US was offering a $ 1 million reward for the arrest of the slight Patek, who is known as the "little Arab" in the attack that killed seven Americans.
News of his arrest came from two intelligence officials in Indonesia and Philippines. Patek's exact whereabouts were not immediately known. Both spoke on condition of anonymity, citing the sensitivity of the information.
The question of what to do with him could become a key indicator of how President Barack Obama will handle major terrorist suspects captured abroad. However, American officials declined to comment on the case.
Under former President George W Bush, he likely would have been moved into the CIA's network of secret prisons. For instance, one of Patek's accused co-conspirators in the nightclub bombing, Hambali, spent years in the prison system and is now being held in Guantanamo Bay, Cuba.
But the CIA's secret prisons are closed and Obama is trying to empty Guantanamo, not add new inmates.
Patek is believed to have been among a group of Indonesians, Malaysians and Filipinos who travelled to Afghanistan and Pakistan during the 1980s and 1990s for training and fighting.
On their return to Southeast Asia, they formed Jemaah Islamiyah, blamed for a string of suicide bombings targeting nightclubs, restaurants, hotels, and a Western embassy in Indonesia. Together more than 260 people have died.
Patek fled to the southern Philippines after the Bali bombings, seeking refuge and training with both the Moro Islamic Liberation Front, the largest Muslim separatist group, and later, the al-Qaeda-linked Abu Sayyaf, security experts have said.