Sisters Bianca, 5, far left, and Samantha "Princesse" Revelus, 17, far right, were killed Saturday afternoon by their 23-year-old brother, Kerby, police said.

Sarafina, 9, center, was saved when police arrived at their home on Belvoir Road in Milton and shot and killed Kerby.

After the tragedy, family and neighbors constructed a makeshift memorial to the girls, and classmates mourned at Milton High School, where Samantha was a senior.