One person has been killed in a shooting inside a Costco store in Southern California.
Two others have been injured, including an off-duty officer, police have said.
It is believed the shooting stemmed from an argument inside the Corona store shortly before 7.45pm on Friday June 14.
As of yet, the relationship between the attacker and the victims is still unclear.
A man has now been arrested and hospitalised, officers from Corona Police confirmed.