Adam Chow, 65, and his 4-year-old granddaughter were killed alongside a Target employee in the triple homicide.

The gunman, identified as Ethan Blaine Nieneker, 32, also shot and killed Target employee Hector Leopoldo Martinez Machuca, 24.

The Austin Police Department has identified the suspect and the victims in the triple homicide outside a North Austin Target.

"We were just sitting there debating on going into the store, you know, and we heard gunshots and people running for their lives," said Leonard Moore, a witness to the deadly shooting in a North Austin Target.