The Sudanese MIG jet fighter on Thursday bombed Heiban County in Nuba Mountains killing one person and wounding another.
Father’s Cleft Ministry School head teacher Kocho Helon Moses who witnessed the bombing told Voice of Peace Radio that the plane dropped four bombs at Girls’ Secondary School.
He explained that the plane hovered three times and the fourth time it bombed the area.
Mr Helon encouraged residents to dig trenches to hide in during bombardment times.
He strongly appealed to the International Community to intervene and protect Nuba civilians.