One person was killed and three others were injured in a shooting incident at a Costco in the city of Corona, 75 km east of downtown Los Angeles, local CBS news channel reported Friday.
Witnesses told CBS that the fatal shooting occurred after an altercation between a man and a woman with her child inside the membership-only warehouse, where seven to eight gunshot sounds were heard.
Police from the city and riverside county were swarming the area and the Costco was evacuated, they added.
