The Latest on a fatal shooting at a Costco Wholesale warehouse store in Southern California (all times local):

12:45 p.m. Monday

Los Angeles police say an off-duty officer who shot and killed a man inside a Southern California Costco store won't have any contact with the public during a criminal investigation and separate department review.

The Corona police department investigate a shooting inside a Costco in Corona, Calif., Friday, June 14, 2019. A gunman opened fire inside the store during an argument, killing a man, wounding two other people and sparking a stampede of terrified shoppers before he was taken into custody, police said. The man involved in the argument was killed and two other people were wounded, Corona police Lt. Jeff Edwards said. (Will LesterInland Valley Daily BulletinSCNG via AP)

The Corona police department investigate a shooting inside a Costco in Corona, Calif., Friday, June 14, 2019. A gunman opened fire inside the store during an argument, killing a man, wounding two other people and sparking a stampede of terrified shoppers before he was taken into custody, police said. The man involved in the argument was killed and two other people were wounded, Corona police Lt. Jeff Edwards said. (Will LesterInland Valley Daily BulletinSCNG via AP)

Police in the city of Corona are investigating the shooting Friday night that left Kenneth French dead and his parents critically wounded. Rick Shureih, French's cousin, told the Riverside Press-Enterprise that the 32-year-old was a "gentle giant" who had mental disabilities. He declined to give specifics about his condition.

Investigators say the off-duty Los Angeles Police Department officer claims French attacked him without provocation as the officer held his young child.

LAPD Officer Norma Eisenman says Monday that the officer, who has not been identified, has been assigned administrative duties during the investigations. She says the officer works at the LAPD's Southwest station.

Scattered shopping carts and a flipped over beach chair lays on the ground following a shooting inside a Costco in Corona, Calif., Friday, June 14, 2019. A gunman opened fire inside the store during an argument, killing a man, wounding two other people and sparking a stampede of terrified shoppers before he was taken into custody, police said. The man involved in the argument was killed and two other people were wounded, Corona police Lt. Jeff Edwards said. (Will LesterInland Valley Daily BulletinSCNG via AP)

Scattered shopping carts and a flipped over beach chair lays on the ground following a shooting inside a Costco in Corona, Calif., Friday, June 14, 2019. A gunman opened fire inside the store during an argument, killing a man, wounding two other people and sparking a stampede of terrified shoppers before he was taken into custody, police said. The man involved in the argument was killed and two other people were wounded, Corona police Lt. Jeff Edwards said. (Will LesterInland Valley Daily BulletinSCNG via AP)

9:58 p.m. Sunday

The Los Angeles Police Department is gathering evidence and video footage in an administrative investigation into an off-duty officer who shot and killed a man authorities say attacked him inside a Southern California Costco Wholesale warehouse store.

Authorities did not respond Sunday to requests for comment about what provoked the Friday night confrontation and whether anyone but the officer was armed. Two others were critically injured in the shooting in Corona, which is about 40 miles (64 kilometers) east of Los Angeles.

Heavily armed police officers exit the Corona Costco following a shooting inside the wholesale warehouse in Corona, Calif., Friday, June 14, 2019. A gunman opened fire inside the store during an argument, killing a man, wounding two other people and sparking a stampede of terrified shoppers before he was taken into custody, police said. The man involved in the argument was killed and two other people were wounded, Corona police Lt. Jeff Edwards said. (Will LesterInland Valley Daily BulletinSCNG via AP)

Heavily armed police officers exit the Corona Costco following a shooting inside the wholesale warehouse in Corona, Calif., Friday, June 14, 2019. A gunman opened fire inside the store during an argument, killing a man, wounding two other people and sparking a stampede of terrified shoppers before he was taken into custody, police said. The man involved in the argument was killed and two other people were wounded, Corona police Lt. Jeff Edwards said. (Will LesterInland Valley Daily BulletinSCNG via AP)

The officer opened fire after Kenneth French, 32, of Riverside, "assaulted" him "without provocation" as the officer held his young child, Corona police said Saturday.

Bullets struck French and two of his family members, police said.

Rick Shureih, French's cousin, told The Press-Enterprise that he was a "gentle giant" who was mentally disabled. Shureih also identified the other two victims as French's parents, Russell and Paola French, and said they remained in an intensive care unit Sunday.

Heavily armed police officers exit the Costco following a shooting inside the wholesale warehouse in Corona, Calif., Friday, June 14, 2019. A gunman opened fire inside the store during an argument, killing a man, wounding two other people and sparking a stampede of terrified shoppers before he was taken into custody, police said. The man involved in the argument was killed and two other people were wounded, Corona police Lt. Jeff Edwards said. (Will LesterInland Valley Daily BulletinSCNG via AP)

Heavily armed police officers exit the Costco following a shooting inside the wholesale warehouse in Corona, Calif., Friday, June 14, 2019. A gunman opened fire inside the store during an argument, killing a man, wounding two other people and sparking a stampede of terrified shoppers before he was taken into custody, police said. The man involved in the argument was killed and two other people were wounded, Corona police Lt. Jeff Edwards said. (Will LesterInland Valley Daily BulletinSCNG via AP)