CHITRAL - Two students - brother and sister - died when an avalanche fell here in Shoghor valley. According to Shoghor Police SHO, the students were on the way to school. When they reached near Toopkhana Eidgah, they were hit by avalanche. As a result they injured. They were taken to nearby private hospital but they could not survive. Zakaria Bibi, 13, Class 7th student and Afsar Khan, 7, was a student of Class 2.