He was on the force for three years and received several awards for excellent police duty, according to data from the NYPD.
Residents from his community described him as a respectable family man who would not hesistate to help out a neighbor in needs.
John Ferranola, of Massapequa Park, asked everyone to respect the family's privacy and called Diller's death a "horrible, horrible moment."
"Never had to ask him for help, he always offered to help others," Ferranola said of Diller. "That's all you can ask for in a neighbor."
The NYPD police commissioner says that Diller leaves behind a wife and young child.