JONESBORO, Ga. -- A child in Clayton County calls 911 after a brother and sister are murdered in their home.

Now on Saturday night, police still looking for the killer.

Clayton County police have identified the two killed as 15-year-old Daveon Coates and his 11-year-old sister Tatiyana.

Police said the parents have been cooperative but they weren’t home at 5 a.m. when two of their kids were shot and killed.

Instead, it’s the other siblings who were home that night who will be giving the most information to investigators.

They'll be describing what happened at the corner house on a suburban street that is now the scene of a deadly double killing.

The victims - a brother and sister - were just 15 and 11.

“It’s very troubling and it’s why we’re working so hard,” a police spokesperson said.

Joy Shilengay lives on Libby Lane just feet from the deadly scene.

“It’s sad because I have two kids of my own,” she said.

She said the family hasn’t lived there long but they’ve made an impression.

“They just moved in a month ago," Shilengay said. "It’s always the mom and the dad out with the kids, playing.”

PHOTOS | 2 young teens found shot to death in Jonesboro

Several kids were there overnight - the oldest was 15-year-old Daveon Coates. The youngest was six.

Police said mom and dad were out socializing at 5 a.m. when Daveon and his 11-year-old sister Tatiyana were killed.

“We’re working extremely hard to identify a suspect, or suspects,” a police spokesperson told 11Alive.

The surviving children, ranging in age from 6 to 13, are trying to give police a description.

But at this point, police said they don’t have much to go on.

Investigators said that it doesn’t appear anything was stolen from the house.

And now comes the question of what happened.

“At this time, no, we don’t have any reason to believe they were targeted,” a police official said.

Neighbors said they didn’t see or hear anything overnight.

At this time it’s not clear if there was one or multiple suspects.

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