ATLANTA -- Holy Innocent's' Episcopal School, a private school, was lockdown in Atlanta Wednesday morning.

Sandy Springs Police had a large presence at the school after a disgruntled teacher caused concern. More on what caused the lockdown, here.

MORE | Police intercept disgruntled school employee with gun

A concerned parent forwarded 11Alive an email the school sent about the lockdown. It read,

"At 9:35 a.m. Holy Innocents' Episcopal School went into a lockdown at the direction of Paul Barton, Head of School, based upon information of a possible external threat. The Sandy Springs Police Department has been notified and are on campus. We will notify you immediately when the lockdown has been lifted. We ask that you do not attempt to come to campus to pick up your students. We are taking every necessary precaution. "

Photos | Holy Innocents' lockdown

According to their website, 1,376 students are enrolled at Holy Innocent's in K3-12 grades.

The private school is located in the 800 block of Mount Vernon Highway in Atlanta.

11Alive has a crew on the scene gathering more information.

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