A 15-year-old boy is facing weapons charges after several students were pepper-sprayed in Lethbridge Wednesday. Police say the boy got into a fight with a 17-year-old, which was part of an ongoing conflict. A 16-year-old then joined in and allegedly started hitting the younger boy as well. At the end, the 15-year-old set off the pepper spray towards a crowd of students who had gathered to watch the fight. About 20 people were treated by EMS. Assault charges are pending against the two older boys.