Police: Suspect in custody in murder of 2 young children in Georgia

From Shawn Nottingham, CNN

STORY HIGHLIGHTS

NEW: Police said they have the suspected killer in custody
The children killed were a 1-year-old and a 4-year-old, a CNN affiliate reports
Two other family members escaped the attack

(CNN) -- A suspect is in custody in the murder of two young siblings during an attack at a home in Atlanta's northern suburbs, Gwinnett County Police spokesman Jake Smith said Thursday.

Two brothers, ages 1 and 4, were killed in Lawrenceville Wednesday night, CNN affiliate WGCL reported. A 4-year-old and an adult identified as the father were also injured, the affiliate said.

The adult escaped the attack and fled to a neighbor's house, the affiliate reported.

Two families lived in the home where the attack occurred, and the family that was attacked lived in the basement, police told the affiliate.