(CNN) -- Human remains have been found in two separate treatment plants in Los Angeles County, authorities said Monday.
An upper torso of a female, possibly Hispanic, was discovered in a waste treatment plant in Bassett.
It's believed to be related to remains found Saturday in a water treatment plant in Carson, the Los Angeles County Sheriff's Department said in a statement.
The cause of death is unknown and will be determined by the Los Angeles County Department of Medical Examiner-Coroner.
Jim Blacklock, an investigator with that department, said it will also determine whether the remains belong to the same person.
The sheriff's department urged anyone with information about a missing female to call its homicide bureau.
CNN's Diahann Reyes contributed to this report.
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