He carried two pistols and a knife into school and made students hand over their cell phones .
On November 30 , 2010 , then - sophomore Sam Hengel held a teacher and 24 students captive for five hours at gunpoint before shooting himself .
Sam Hengel carried two pistols and a knife into school and made students hand over their cell phones .
On November 30 , 2010 , then - sophomore Sam Hengel held a teacher and 24 students captive for five hours at gunpoint before shooting himself .