A 62-year-old man and a 57-year-old woman were found shot dead in a Petah Tikva apartment on Friday.
MDA teams have determined their deaths on the scene.
An initial investigation into the shooting incident revealed that the 62-year-old man murdered the 57-year-old woman in the apartment kitchen where their bodies were found.
The two were an unmarried couple.
The man worked as a security guard and held a weapons license.