Update at 10:30p on 6/14: 1 person dead and 2 wounded. Alleged gunman is in custody. Source abc7.com.
A shooting was reported the Costco on McKinley St. in Corona on Friday.
According to reports, witnesses heard multiple gunshots. Corona Police have confirmed that the incident has been "stabilized".
Witnesses state that people tried to escape but that the doors were locked.
Head over to ABC7.com for more details on this developing story.