VICTORVILLE (AP) — A 40-year-old school teacher from Southern California was found dead in her classroom by a security guard and students. Authorities say it’s most likely from natural causes.

A San Bernardino County sheriff’s statement says the body of Tamara Joyce Dawe of Adelanto was found Tuesday morning at Mesa Linda Middle School in Victorville.

Authorities say there were no signs of foul play, but the cause of death was is clear. An autopsy has been scheduled.

The Victorville Daily Press says Dawe was a language arts teacher and yearbook advisor.

The newspaper says it appeared Dawe hadn’t shown up for work Tuesday, and when a school security officer opened the classroom for students to get in they found her on the floor. The guard rushed the students out and called police.

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