by Atoday News Team

A 17-year-old student from the Seventh-day Adventist's Memphis Junior Academy in Tennessee is being held in custody after a 48-year-old teacher was found in a pool of blood in a classroom Wednesday morning.

Police did not release the teacher's name, but an official for the Seventh-day Adventist national network identified her as Suzette York, who had been at the school for more than three years, and also the school's principal, The Commercial Appeal reports.

Several sources report that York was stabbed to death, but police have not confirmed the claims.

"We have lost a great teacher and valuable member of our school," a school administrator told WREG-TV Wednesday. Memphis Mayor A.C. Wharton said it was an isolated incident.

The victim was pronounced dead at the scene when police arrived just before noon, according to The Commercial Appeal. School was promptly dismissed and will not be in session for the rest of the week, WMC-TV reports.

Another source, same story, more details:

Student charged with first-degree murder, more details