Updated

The Latest on three people found unconscious in Los Angeles (all times local):

4:15 p.m.

Los Angeles authorities say an 8-year-old girl is in critical condition after she was found naked and covered in a white powder along with a woman and a baby who later died.

The three were discovered unconscious in a South Los Angeles parking lot early Thursday.

Authorities say the infant was pronounced dead at a hospital, where the 26-year-old woman is in stable condition. She is believed to be the mother of the children.

Police say the powder appears to be a non-toxic baby product and the victims had no obvious signs of injury.

The owner of a nearby liquor store tells KABC-TV and the Los Angeles Times that the woman was disheveled and barefoot when she bought three cans of Ajax cleanser and some gloves Wednesday evening.

Neighbors tell KABC-TV that the woman who lived nearby may have been in an abusive relationship with her boyfriend. They're afraid she may have tried to harm herself and the children.

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7:30 a.m.

Los Angeles investigators have determined a white powder covering an infant found in a parking lot who later died is some sort of baby product.

The infant died and a young girl and a woman were hospitalized after all three were discovered naked, unconscious and covered in the powder on the pavement outside a store early Thursday.

Officer Irma Mota says a hazardous materials team determined the powder was not toxic and likely a baby product, possibly baby powder.

Mota says the victims showed now obvious signs of injury.

Police responded shortly before 2 a.m. to reports of a female heard screaming near the market in South Los Angeles.

The 8-year-old girl is stable and the 26-year-old woman — believed to be the girls' mother — is in critical condition.

Detectives will review surveillance footage and look for witnesses.

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5:45 a.m.

Los Angeles police say an infant died and a little girl and a woman were hospitalized after they were found naked, unconscious and covered in a white powder-like substance in a store parking lot.

Capt. Michael Rimkunas says police responded shortly before 2 a.m. Thursday to reports of a female heard screaming near the market in South Los Angeles.

Rimkunas says the three victims were found naked on the pavement, covered in a large amount of the mysterious substance.

The infant died at the scene. The 8-year-old girl is stable and the 26-year-old woman — believed to be the girls' mother — is in critical condition.

Rimkunas says a hazardous materials team is trying to determine what the substance is.

He says the victims showed no obvious signs of injury.