The fire took place on Wednesday, Oct. 2, just before students were released for the day, said the Suffolk County Sheriff's Office.
Officers Christopher Delaney and Brian Arce were at the school teaching the Gang Resistance Education and Training Program when the bus caught fire, police said.
The two officers secured the scene and directed traffic as more busses and parents arrived to pick up students at the end of the day.
As the bus became fully engulfed in flames, Suffolk County Police Officers and the Center Moriches Fire Department responded to put out the fire.
No students, staff, or first responders were injured.
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