SCHUYLER, Neb. (AP) – Police have arrested a student who was found with a handgun, ammunition and a knife on school grounds. Reports say police were called Wednesday morning to Schuyler Central High School after another student alerted school officials about the weapons. Police say school officials immediately tracked down the student, and a search of his belongings turned up the gun, ammunition and knife. Police took possession of the weapons and arrested the student, who is described only as being under 18 years old.