The code yellow lockdown was lifted at Terry Parker High School in the Arlington area on Monday afternoon, according to Duval County Public Schools.
Students and staff are safe and there were no threats or acts of violence at the school, officials say.
Duval County Public Schools informed that the school, located at 7301 Parker School Road, was on code yellow lockdown at 12:22 p.m.
The school district tells First Coast News they are working to gather more information from the school and will send out an update when one is available.
This is the second school that has been placed on lockdown in Duval County on Monday. Around 9 a.m., Mandarin Middle School was placed on a code yellow lockdown due to a social media threat.