Read the will surrounding dead woman's home that pushed son to massacre siblings

This story discusses suicide. If you or someone you know is having thoughts of suicide, please contact the Suicide & Crisis Lifeline at 988 or 1-800-273-TALK (8255).

When Theresa DeLucia, a 95-year-old mother of four from New York’s Long Island, died last month, she had already laid out her wishes in a last will and testament more than a decade ago.

The 2007 document, however, may have played a role in her youngest son’s shooting rampage, which killed his three siblings and a niece in a murder-suicide.

Joseph DeLucia stood to gain one-fourth of the value of the home’s sale as well as a quarter of the rest of his mother’s…