An Indonesian court on Thursday found Amrozi bin Nurhasyim guilty of last October's Bali bombings that killed 202 people.
The court, however, said would pass the sentence later.
A news agency quoted Chief Judge I Made Karna as saying Amrozi, 41, was 'legally and convincingly guilty of all charges'.
Prosecutors have asked that Amrozi face a firing squad for the terror bombings.
After the verdict was read, Amrozi took off his Islamic skullcap, raised his arms and gave his lawyers the thumbs-up sign. Hundreds of people, including survivors of the bombings, cheered when the judge read the sentence.
As he was led out of the courtroom, Amrozi smiled broadly at Australian survivors, some of whom shouted back angrily. Australia lost 88 people in the attack.
The verdict came two days after another bomb exploded at the J W Marriott Hotel in Jakarta, killing at least 10 people and wounding nearly 150.
Both attacks have been linked with Jemaah Islamiyah, a shadowy Al Qaida-linked terrorist group believed to be operating in Southeast Asia.
Agencies