BREAKING: Windermere High on lockdown again

4 p.m. UPDATE
Following a search of Windermere High School by Orange County Sheriff's Office deputies, the lockdown was lifted. After rooms were cleared, students and staff were moved to the athletic fields. Dismissal commenced at about 2:45 p.m. — about 90 minutes after the normal 1:10 p.m. dismissal time on Wednesdays.

Principal Douglas Guthrie released the following statement:

"A parent received a text message from a texting app," he wrote via Facebook. "The message indicated that there were individuals on campus in the restroom with a weapon. Do to the seriousness of this threat, the administration informed (Orange County Sheriff's Office) and conducted a search of the restrooms and hallways. At the same time — and for the safety of our staff and students — we went on lockdown. The sheriff’s (office) arrived and searched all bathrooms and hallways again, and nothing was found. Many thanks to the students, staff and parents for their conduct and help during this unfortunate event. Our No. 1 job is the safety of your students. Thank you once again for your help and cooperation."

12:43 p.m. UPDATE
Windermere High School officials say all students are safe. However, the school remains on lockdown.

Officials posted on Facebook: "Currently, Windermere High School is on a lockdown. Students and staff are safe. The sheriff’s department is on property and will be clearing the buildings. As the buildings are cleared, students will be moved to the athletic fields. As soon as all buildings have been cleared, students will be released from the athletic fields. Once again, All students and staff are safe."

PREVIOUS COVERAGE:
For the second time since it opened in August, Windermere High School is on lockdown.

At about noon Wednesday, Nov. 15, school officials posted to social media this message: "We are currently on a Lockdown at this time. The Sheriff's Department is on property."

Two helicopters and police vehicles from the Orange County Sheriff's Office were arriving to the school within 10 minutes of that message. With parents arriving to pick up their students, cars already are beginning to stack up along Winter Garden-Vineland Road. Classes are supposed to be dismissed at 1:10 p.m. Wednesdays.

The first lockdown, which occurred Sept. 21, was in response to threatening text messages. 

This is a developing story.