Ethan Nieneker, 32, is accused of killing three people, including a 4-year-old girl, outside a Target store in Austin, Texas.

Ethan Nieneker went on a deadly rampage Monday afternoon in Austin, Texas, killing a Target employee, a 66-year-old man and his 4-year-old granddaughter.

The entire crime spree — a shooting, multiple car crashes, vehicle theft and assaults — happened in less than an hour, police said.