The attack on the AU peacekeepers came months before the 7,000-strong force was replaced by a U.N. peacekeeping force of 26,000 troops . Bahr Idriss Abu Garda faces charges in deaths of peacekeepers in 2007 . 12 killed when a soldiers stormed North Darfur African Union peacekeeping base . The U.N. mission said it was investigating the incident. Three other suspects , including Sudanese President Omar al-Bashir , are at large .
Bahr Idriss Abu Garda faces charges in deaths of peacekeepers in 2007 . 12 killed when a soldiers stormed North Darfur African Union peacekeeping base . The U.N. mission said it was investigating the incident. Three other suspects , including Sudanese President Omar al-Bashir , are at large .