A funeral service will be held at 4:30 p.m. Sunday at St. Gall Catholic Church, 5511 S. Sawyer, Chicago.
The House of Branch funeral home is handling the arrangements.
Last week, police discovered the bodies of the Martinez/Cruz family in their home in the 5700-block of South California Avenue.
PHOTOS: 6 family members murdered in Gage Park home
The victims were identified as Noe Martinez Sr., 62; his wife, Rosaura Martinez, 58; their children Noe Martinez Jr., 38, and Maria Herminia Martinez, 32; as well as their grandchildren Leonardo Cruz, 13, and Alexis Cruz, 10, according to the Cook County Medical Examiner's Office. Their deaths were ruled homicides.
The father of the young children is slated to arrive in Chicago from Mexico either Tuesday or Wednesday.
Huge crowds gathered in front of the home over the weekend to pay their respects. Six white crosses were set up, one to represent each family member killed.
Police have not made any arrests or determined a motive.