The Guardian 5th August 2010. The court was set up following UN Security Council Resolution 1315 (2000). According to the court's statute , it has power "to prosecute persons who bear the greatest responsibility for serious violations of international humanitarian law and Sierra Leonean law committed in the territory of Sierra Leone since 30th November 1996 ..."
See Prosecutor v Charles Taylor where it is explained why the case against Taylor is being heard at The Hague.
Proceedings may be followed via the court's website.
Further material on international humanitarian law.
Addendum 15th August: Naomi Campbell given protection - The Guardian