The Government is to carry out an in depth study on familicide and the supports available for families affected.
It comes after requests from the family of Clodagh Hawe - who was murdered along with her three sons by her husband Alan, who then killed himself in 2016.
Earlier this year Clodagh's family called for an inquiry, and for the government to do more to highlight such cases.
They said it was too easy to dismiss them, and to throw a blanket of silence over the incidents.
This morning cabinet Ministers will give the go ahead to an in-depth research study examining familicide.
It will also look an international best practice when it comes to investigating domestic homicides, and how those might be applied in Ireland.
Justice Minister Charlie Flanagan is expected to tell his colleagues that while familicide is rare in Ireland, it's devastating for the families affected.
He wants clear guidelines in place to support those impacted.
The review team will talk to state agencies, family members of victims and other non government bodies with expertise - and will take a year to complete its work.