CENTRAL — Central High School was placed on lockdown Thursday after the school received a threatening phone call. 

The school was immediately placed on lockdown as a precaution, a message sent out by the school said. Within 30 minutes, the lockdown was lifted.

"Students and staff are safe and are following established safety protocols. We are working closely with local law enforcement to thoroughly investigate the report," officials said.

Central Police said they had a very large law enforcement presence with many agencies assisting us.

"All is secure right now, and we are just verifying that everyone is safe," police said.