Seaford High School.

Seaford High School. Credit: Newsday / Audrey C. Tiernan

A Thursday morning precautionary lockout at Seaford High School, instituted after district officials notified Nassau County police of a threat, has been lifted after police investigators determined the threat was "non-credible," officials said.

In a message to the school community, Seaford Superintendent of Schools Adele Pecora characterized the threat as a "concerning phone call."

A district spokesperson said police were notified at 6:50 a.m. Officers were sent to the scene and, as per protocol, a lockout was instituted.

"The schools are safe and the lockouts have been lifted in all buildings," Pecora wrote in a subsequent message. "All after school activities will occur. We thank the NCPD for their quick response and thorough investigation."

NewsdayTV’s coverage of LI Votes 2024 continues with reports from Nassau and Suffolk counties

Watch live: NewsdayTV's coverage of LI Votes 2024 continues with reports from Nassau and Suffolk counties

NewsdayTV’s coverage of LI Votes 2024 continues with reports from Nassau and Suffolk counties

Watch live: NewsdayTV's coverage of LI Votes 2024 continues with reports from Nassau and Suffolk counties

SUBSCRIBE

Unlimited Digital AccessOnly 25¢for 6 months

ACT NOWSALE ENDS SOON | CANCEL ANYTIME