DeLucia, Jr., who worked as a local auto mechanic, was also a hoarder and the house was packed with tools and other car repair items, Fitzpatrick added.

At the extreme, could this be a "failure to launch" child, now 57 years old, that continued to live at home being provided for by mom unable or or unwilling to provide for themselves, and finally was being forced to provide for themselves at age? Did the family make overtures to get the man mental help for decades only to be rebuffed by mom or the murderer? Now that mom was gone, the siblings were forced to deal with it?

The article doesn't contain enough information to draw conclusions.

Grief is a hell of a drug.

https://en.wikipedia.org/wiki/%27No_Way_to_Prevent_This%2C%27_Says_Only_Nation_Where_This_Regularly_Happens

He should've started with himself

if only there was a good guy with a gun :(

Using so-called “red flag” laws, local police could have potentially prevented DeLucia from obtaining a firearm if they were made aware he was dealing with mental health issues, Nassau County Police Commissioner Patrick Ryder said Monday.

And if we had a PreCrime unit like in Minority Report, crime would never happen. What a pointless addition to the article and pointless statement by useles police. These kinds of mental issue are rarely caught in time as the person "seems normal" until they don't. While long guns are insanely accessible and cheap in most states.

With the frequency that crazy errant behavior seems to occur with boomer-age people, I truly do wonder if there is a common thread. Leaded gas? Covid causing long-term brain damage from plugged blood vessels? Micro-plastics? Having to face the reality that their retirement is going to erode away because of the climate change they naively accelerated with their spoiled ass lives?

It's not 'fatally shooting', it's killing or murdering.

Edit: lowered the bodily functions over the life threshold using a portable metal ejecting tool.

Ok "shot dead", is that ok?