Police said they responded to a call of a child with a knife. When NYPD arrived, School Safety Agents said they had a 9-year-old in custody who was allegedly carrying a box cutter.
As the investigation continued, NYPD officers took two additional students, ages 8 and 11, into custody and recovered a knife.
Police said the boys were plotting to assault someone.
The names of the boys were withheld due to their ages.
They are charged with conspiracy to commit a crime and criminal possession of a weapon.