An 11-year-old McGrath Elementary School student who was arrested on Monday morning after he allegedly brought a knife to the school earlier in the week and made an “unspecified threat” over social media remains in custody and is facing multiple charges.

The student, whose name cannot be released because the boy is a juvenile, is facing an assault with a deadly weapon charge, as well as a criminal threats charge for the statements posted on social media, said Shirley Miller, public information officer for the Santa Clarita Valley Sheriff’s Station, in an email.

He was not released to his parents following the incident, and remains in custody at the Barry J. Nidorf Juvenile Hall in Sylmar, said Miller.

Detectives are still investigating the incident.

The unspecified threat caused McGrath Elementary School to be put on lockdown; however the lockdown was lifted shortly before 1 p.m. on Monday.

“The student (who allegedly made the threat was) not on campus and (was) quite a distance away, about an hour and a half,” said Paul Cordeiro, superintendent of the Newhall School District.

Miller said it is the school administrator’s decision to place the school on lockdown.

“School safety is a top priority for our schools in Santa Clarita. Every school has a safety protocol for incidents, both small and large,” said Miller in a Facebook post. “Even though, as in this case, it is a non-credible threat, we still have certain measures that we take to ensure students’ safety. No matter how small, we have to address each situation in a proactive manner. When you hear that a lockdown is in place at one of our area schools, that is your reassurance that we do have safety protocols in place. Keeping your children safe at school is the top priority.”