LOS ANGELES (AP) — Authorities are poring through video to figure out how a confrontation between an off-duty Los Angeles police officer and a man described by family as mentally disabled ended in a shooting in a Costco store that killed the man and critically wounded his parents. The officer told investigators he opened fire after Kenneth French, 32, of Riverside, attacked him without provocation as the officer held his young child Friday night, according to police in Corona, about 40 miles (64 kilometers) east of LA. The officer was the only one who fired shots, striking French and two family members, police said. Authorities did not respond Monday to requests for more information about what immediately preceded the shooting and whether anyone but the officer had a weapon. Rick Shureih, French's cousin, told the Press-Enterprise in Riverside that French was a "gentle giant" who had mental disabilities.Read more on NewsOK.com