TORONTO - Omar Khadr's war-crimes trial is set to resume Oct. 18 in Guantanamo Bay.

It was not immediately clear why that date was chosen.

If the October date holds, it means the trial will be restarting more than two full months after its abrupt halt two weeks ago when Khadr's defence lawyer took ill.

Lt. Col. Jon Jackson was cross-examining a prosecution witness on the first day of the trial proper Aug. 12 when he collapsed in the courtroom with a gall-bladder condition.

The Toronto-born Khadr, 23, is on trial for allegedly killing an American special forces soldier in Afghanistan in July 2002 when he was 15 years old.

His contested military commission trial is the first under U.S. President Barack Obama and has been severely criticized by human and legal-rights groups.