He refused to discuss details of the case. The other two men have not been identified, but sources have said one is the brother of a suspect in detention and runs a safe house for Islamic militants near the border with Saudi Arabia. There has been no official word on what the indictment against the various suspects contains. Yemeni sources say charges against at least two of the six include carrying out the attack, threatening state security, forming an armed gang and possession of explosives. Conviction on all four of those counts would carry a minimum 10-year prison sentence.
Execution is possible for convictions on threatening state security or carrying out the attack.
Al Hajjri said the trial's date is not certain since investigators are still interviewing people. CNN Senior Producer Marty Kramer and The Associated Press contributed to this report. Pages will open in a new browser window External sites are not endorsed by CNN Interactive. An AOL Time Warner Company. All Rights Reserved.