Indonesian Muslim cleric Abu Bakar Bashir appealed his conviction in the deadly terrorist attack on Bali island in 2002 to the Indonesian Supreme Court Tuesday.
A high court upheld Bashir's original 30-month sentence last month. But his lawyers contend the court reached its verdict based on false police evidence.
They claim authorities fabricated a conversation Bashir allegedly had with one of the men convicted in the bombing, which killed 202 people.
The cleric was initially charged with being the leader of Jemaah Islamiyah, the Islamic militant group which has been blamed for the Bali bombings and several other deadly terrorist attacks. But that charge was later dismissed, and Bashir was convicted instead on conspiracy charges.
The United States and Australia have criticized that sentence as being too lenient.