Feral hogs attacked and killed a woman outside a southeast Texas home where she worked as a caretaker, according to authorities.

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Christine Rollins, 59, cared for an elderly couple at their home in the small town of Anahuac.

"Unbelievably tragic. This is a very rare incident, just what little research we have found less than six of these have been reported in the nation," Chambers County Sheriff Brian Hawthorne said.

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Hawthorne said Monday the 84-year-old woman she cared for was waiting for Rollins to arrive on Sunday. The woman went outside and found the woman in the front yard between her car and the front door.

Hawthorne said Rollins had a severe head wound and several other injuries consistent with an animal bite. The coroner in neighboring Jefferson County ruled Monday that she bled to death after an attack by feral hogs. Texas’ KATU2 reported that the medical examiner said the cause of death was “exsanguination due to feral hog assault."

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Anahuac is just over 40 miles east of Houston.