Glazier Elementary School, located at 10932 E. Excelsior Dr., and Lampton Elementary School at 14716 Elmcroft Ave., were locked down as a precaution.
A Los Angeles County Sheriff's Dept. SWAT team was summoned to a residence on the 14500 block of Dumont Avenue. A suspect wanted for assault with a deadly weapon was reportedly barricaded there.
The incident began at about 1:45 p.m. when the suspect allegedly ran from deputies into the residence.
The suspect surrendered at 3 p.m. and was taken into custody without incident.
Both schools' lockdowns were lifted after 3 p.m.