JACKSONVILLE, Fla. - Duval County Public Schools confirmed Friday morning that three of its schools were on lockdown Friday morning due to police activity in the area.

The schools on lockdown included Jean Ribault High School, Jean Ribault Middle School and Sallye B. Matthis Elementary School. As of 10:55 a.m., the schools shifted from code red lockdown to code yellow. The lockdown was lifted shortly after the incident.

The Jacksonville Sheriff's Office said shots were fired off of school grounds, but nobody was shot. As a precaution, they asked the schools to go on code red lockdown.

According to a statement issued to parents following the incident, while the schools were on lockdown, the Duval County School Police found a few individuals on campus without permission. They detained them and called JSO for assistance.

DCPS said no one was injured on campus. It also can't confirm if these individuals are related to the shooting off school grounds.

The letter Ribaul HS gave students to give parents following a lockdown Friday morning. Photo: FCN.

Right now, Ribault HS is letting parents pick up their kids at the auditorium.

Stay with First Coast News as this story develops.