QALYUBIA, Egypt: Four students from Mostorod Agricultural School today stabbed a teacher with penknives on the playground. The teacher sustained injuries to the hand and he was transferred to Bahtim Public Hospital for treatment. An attorney is now investigating the incident. Qalyubia Security Director Gen. Ahmed al-Naghy received a report from Brig. Gen. Emad Labib. Police Chief Abdel Mo'new Wahdan arrested the students and found them in possession of the penknives.