On 15 October 2004, he was arrested by the Indonesian authorities and charged with involvement in the bomb attack on the Marriott Hotel in Jakarta on 5 August 2003, which killed 14 people. Secondary charges in the same indictment charge him of involvement in the 2002 Bali bombing, the first time he has faced charges in relation to that attack which killed 202 people and considered Indonesia's deadliest terrorist attack. On March 3, 2005, Bashir was found guilty of conspiracy over the 2002 attacks, but was found not guilty of the charges surrounding the 2003 bombing. He was sentenced to two and a half years imprisonment.