Two people are dead, including the gunman, following a shooting at a Walmart distribution centre in California.
Police say a man drove into the centre in Red Bluff and started shooting at people, killing one and injuring four others.
He was then shot dead by responding officers.
Investigators determined the 31-year-old shooter circled the parking lot four times before crashing into the building and opening fire.
The suspect reportedly had a history with the workplace