Monitor stormed Manual High School on Thursday afternoon.
Officials say three people be suffering with been injured, with one person shot in the arm, another one shot in the leg and the third individual «sustained multiple gunshot wounds».
John White, Denver Police officers Department spokesman, told the Denver Channel: «All three are currently undergoing treatment at block hospitals.»
The wounded have been rushed to hospital.
It is unknown if the harms are life-threatening.
MORE TO FOLLOW
This is a breaking story.. please resuscitate for update