The US is close to deciding where and how to try self-professed masterminded Khalid Sheikh Mohammed and four other al-Qaeda operatives involved in the 9/11 attacks, Attorney General Eric Holder said today."The process is an ongoing one. We are working to make a determination about the placement of that trial," Holder told reporters in Washington after meeting with Canadian officials on cross-border security.Holder said the decision would depend "what is best for the case and for justice in that case." "I would hope that whatever the decision is, it would be one that would be judged on the merits," he said.Mohammed, who was captured in Pakistan in 2003, has been imprisoned at the US military base in Guantanamo Bay.