He was there before 2002. The facts are opaque here. His location during the period 2001 through the summer of 2002 is not publicly available. He was certainly there, however, earlier than 2002.
Evidence of meeting #15 for Subcommittee on International Human Rights in the 39th Parliament, 2nd Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was khadr.
A recording is available from Parliament.