David Koresh | Waco: The Rules of Engagement

Associated Press HOUSTON – The mother of infamous Branch Davidian leader David Koresh was stabbed to death and her sister was in custody Saturday charged with her slaying, authorities said.

Bonnie Clark Halderman, 60, was found Friday afternoon at the home of her sister, Beverly Clark, 54, in a rural area near Chandler, about 175 miles north of Houston in East Texas, Henderson County Sheriff Ray Nutt said.

“It’s still under investigation and we really don’t know what the motive was or what caused this to happen,” Nutt said Saturday.

The sheriff said someone made a 911 call summoning deputies to the home Friday.

Clark was being held without bond in the county jail in Athens pending a court appearance. Jail officials said she did not yet have an attorney.

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