SAN BERNARDINO, Calif.—Investigators say a Southern California man picking up his elderly mother for a doctor appointment found her beaten to death.

The body of 76-year-old Mary Elizabeth Blaskey was found Wednesday afternoon when her son arrived at her San Bernardino home near the Arrowhead County Club.

The Los Angeles Times ( http://lat.ms/UId7QC) says the woman's gray-green Lexus is missing.

The coroner's office will determine the exact cause of death.

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Information from: Los Angeles Times, http://www.latimes.com