Monica Mahaffey, a spokeswoman for the New York State Office of Children and Family Services, said she couldn’t comment on details of the case. But she said: “Our agency will review Suffolk County’s casework and will issue any recommendations for improvement or corrective actions based upon our findings. We will also review the county’s investigation into the handling of this case.”

The records of calls to the abuse hotline were previously reported by The Daily News.

Justyna Zubko-Valva, the boys’ mother, is a correction officer at Rikers Island. A few days after she buried her third grader in a white tuxedo, she spoke from her home in Valley Stream, N.Y., rifling through the piles of papers documenting her years of pleas for help. “I can stand in front of God and say I honestly tried everything,” she said tearfully. “Tommy is not alive anymore, and there are so many people who are responsible for his death.”

In the tidy brick housing complex where the couple lived before splitting up in 2015, residents said they had often awoke to the flashing lights of a police car responding to a dispute at No. 25. They had been married since 2004. “No one was helping her,” said Shagufta Naz, who lives across the courtyard. “He was in the police, so everybody was scared to help her.”

Between them, Officer Valva and Officer Zubko-Valva made more than 20 calls to 911 from 2015 to 2019, according to information provided by the Nassau County Police Department. In one call, Officer Zubko-Valva alleged that her children were being sexually abused. The allegation was investigated and determined to be unsubstantiated, said Detective Lt. Richard S. LeBrun, a spokesman for the department.

In a call on Dec. 30, 2015, Officer Zubko-Valva told the police that her children had not eaten that day in her husband’s care.

Lieutenant LeBrun wrote in an email, “When police arrived they observed the father and children arriving home.”

“Father Had McDonalds bag filled with food in his hands,” the email said. Officers determined the claims were unfounded.