at least 100 people killed, mostly children. at least two teachers among the deceased. this crisis unfolding at a military-run school in peshawar, with dozens of others injured. it was just before 12:00 p.m. when a group of gunmen stormed the school after scaling the walls. the pakistan taliban claiming responsibility. calling this a revenge attack after they say pakistan's military launched a major military offensive against them. >> the military run as number of schools they call them the army public schools. clearly, this one chosen because of its affiliation with the military. and also because it was a soft target. there are children there. >> a taliban spokesman claiming six suicide bombers were ordered to attack the school. their goal -- to shoot older students. a security official says nearly 700 students and staff were in the building when the attack began.