The retired White Plains police officer who fatally shot two of his daughters and three family dogs before killing himself left a note behind, Harrison, NY police say.

Glen Hochman, 52, who had retired from the White Plains police force after 22 years in January, was found dead on in his Harrison home's garage on Saturday afternoon. The bodies of daughters Alissa, 17, and Deanna, 13, were in their beds. The dogs were also found dead.

Harrison Police Chief Anthony Marraccini said the killings appeared to be premeditated and that Hochman left behind a five-to-six page typed note. According to the Journal News, the note" described Glen Hochman's actions and told his wife, Anamarie DiPietro-Hochman, what she 'needed to do to get things in order for the family.'"

The girls - Alissa, 17, and Deanna, 13 - apparently had both already been fatally shot in the head in their rooms at the 1 Adelphi Ave. home when Hochman wrote the note sometime after 2 a.m. Saturday.

While it's unclear exactly when Hochman wrote the note, "he did indicate in the letter that the two girls were taken away" and explained why he had done so, Marraccini said at a briefing with reporters late Monday morning. He would not be more specific.

DiPietro-Hochman had a verbal argument with her husband on Thursday about an $80 cellphone bill and went to the police to report it, emphasizing there was no violence but that she wanted it documented, on Friday.

DiPietro-Hochman, and eldest daughter Samantha, 22, were at Mohegan Sun at the time of the shootings. On Saturday afternoon, after being unable to contact anyone at home, DiPietro-Hochman asked daughter Alissa's boyfriend to check on the family. The 17-year-old found discovered Hochman's body and then called DiPietro-Hochman. The police later discovered the daughters.

The Journal News adds, "[Marraccini] said a .40 caliber Glock handgun that Hochman had purchased was found in his hand. He said there was no indication Hochman had been drinking. Police believe he shot his daughters before shooting the dogs because otherwise the girls would have been awakened by the gunshots."

DiPietro-Hochman had discussed separation with her husband. Marracini said, "It's difficult, especially when you see two young girls, their lives have been ripped away, brutally murdered. You can't get any rationale for that. I can't believe this man took his daughters' life. Even initially at the scene, we looked for other explanations, possibly because the act is so incredibly bad. But unfortunately, I haven't come up with any other explanation."

If someone you know exhibits warning signs of suicide: do not leave the person alone; remove any firearms, alcohol, drugs or sharp objects that could be used in a suicide attempt; and call the U.S. National Suicide Prevention Lifeline at 800-273-TALK (8255) or take the person to an emergency room or seek help from a medical or mental health professional.