Three Indonesian Islamic militants on death row for the 2002 Bali bombings will be executed next month, prosecutors said Friday.

The convicts - Imam Samudra, Amrozi Nurhasyim and Ali Ghufron - have "exhausted their legal options," Jasman Panjaitan, a spokesman for Indonesia's Attorney General, told reporters Friday.

The militants, who maintain their attacks were meant to punish the US and its Western allies for alleged atrocities in Afghanistan, will be executed by a firing squad in the island prison where they are being held. Panjaitan did not provide an exact date.

They were convicted of planning and helping carry out the Oct. 12, 2002, suicide bombings targeting two nightclubs on the resort island of Bali that left 202 people dead, many of them foreign tourists.

The Bali attacks - allegedly funded by al-Qaida - were carried out by members and associates of Jemaah Islamiyah, a Southeast Asian militant group blamed for at least three other suicide bombings in Indonesia, including attacks on the J.W. Marriott hotel and the Australian Embassy in Jakarta.