ALTAMONTE SPRINGS, Fla. — Lake Brantley High School in Altamonte Springs was placed on Code Yellow Wednesday morning after the school received a tip about a possible firearm on campus.

Altamonte Springs police arrested a student after they found a gun on campus that was reportedly stolen out of Orange County, according to the police department.

Lake Brantley High Principal Brain Blasewitz confirmed that the weapon was unloaded and that no other weapons were found on campus. 

Blasewitz initially sent out an email to school staff and parents Wednesday morning, alerting them of the situation.

The lockdown was lifted between 10:30 and 11 a.m. after police gave the all-clear.

In Blasewitz's email, he stated that the student was in custody.

He said all students and staff are safe, and reminded parents that during a Code Yellow, nobody can leave or enter the campus.

After the Code Yellow was lifted, the school said the remainder of the day was "optional" for students. Many were seen leaving campus, along with parents picking up their kids.

Spectrum News reached out to all five elected Seminole County school board members about school safety, but has either received a "no" to an interview, or gotten no response. 

This is a developing story. Please check back for updates.