At least four people were killed and thirty injured when a gunman opened fire at a factory in US town of Kansas on Thursday.
The shooter was killed after an exchange of gunfire with law enforcement officers.
Gunfire was exchanged and law enforcement shot and killed the shooter, Walton said.
According to witnesses, the gunman first shot a woman in the parking lot of the factory before firing at assembly area.
Excel later confirmed that the gunman was a current employee, but did not offer other details.