Adam Chow, along with his 4-year-old granddaughter Astrid Fung, and Rosa Martinez Machuca were killed in what police have described as a "random attack."

A Target employee collecting carts and a man and his granddaughter were gunned down in an unprovoked attack in Austin on Monday, police say.

The Austin Police Department is looking for a vehicle that was involved in a multi-vehicle crash that included a vehicle driven by the man suspected of shooting and killing three people at a Target in North Austin on Monday.

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

Ethan Nieneker, 32, has been charged with murdering four-year-old Astrid Chow along with her grandad Adam Chow and a Target store worker during a shooting spree in Austin, Texas

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