Murder-suicide in Long Island leaves several dead

Five people were killed in a slay-suicide horror on a quiet cul-de-sac in Nassau County on Sunday — days after the family’s matriarch died and kin were set to sell the house, cops and sources said.

All of the victims were shot to death in the tiny blue home on Wyoming Court in Syosset, while the gunman killed himself on the front lawn, Newsday said.

“The mom just died, and they were selling the house,” said Mary Macaluso, a local real-estate agent, noting she was supposed to meet the relatives at the home around noon — but that authorities had closed the street by the time she arrived.

“The kids were all here for the funeral, and they asked me to come to look at the house,’’ Macaluso told the outlet