A Miami-Dade, Fla., school was on lockdown Thursday morning after a teacher reportedly found a gun in a student's backpack at 9:45 a.m. in a school bathroom.

Robert Morgan Senior High School was placed on lockdown, and fire rescue teams as well as local police were called to the scene.

No one was hurt, according to FOX affiliate WSVN, and the lockdown was lifted later Friday morning.