Sandy Hook Elementary School was put in to lockdown this morning after a threat was made, officials say.

The school system says a threat was called in to police this morning and turned out to be a hoax.

Newtown police say at approximately 9:15 a.m. they received a third-party report of a threatening message regarding Sandy Hook School.

The superintendent's office says the school was placed in safe mode as a precaution.

Newtown police quickly determined that all students and staff were safe and that the threat was not credible, but instead was similar to a "swatting" incident.

Police stress at no time was there ever an intruder at the school.

"This morning Newtown police dispatch received a threatening phone call related to Sandy Hook School. As a precaution, the school was placed in safe school mode until police arrived and investigated. The call was determined to be non-credible and currently Sandy Hook School and all other Newtown Public Schools are working under normal operations," said Superintendent Christopher Melillo.