Updated, 12:15 p.m.:
All school buildings are now operating normally.
Update, 11:20 a.m.:
Port Clinton Schools entered lockdown mode at about 9:25 a.m. today after a man called the Ottawa County Sheriff's Office and threatened to bring a bomb to Port Clinton High School.
The unidentified caller said he was going to bring the bomb to the school at 10 a.m., deputies said.
Port Clinton police and U.S. Border Patrol agents are monitoring the area but have not found any suspicious activity.
They've searched cars passing through the area and are currently searching Port Clinton High School.
"We've found nothing so far," Port Clinton police Detective Corbin Carpenter said.
Carpenter said police are trying to err on the side of caution.
They're discouraging anyone from driving in the area of the schools; anyone who does will be subject to a search, they said.
They do not have any suspects.
Update, 11 a.m.:
The threats against Port Clinton High School appear to be a prank.
The district updated its social media accounts at about 11 a.m., stating officials are searching the building as a precaution, but all other district buildings have resumed normal operations.
Original story, 10:45 a.m.:
Port Clinton Schools are currently on lockdown because of a potential threat at Port Clinton High School, according to a tweet the district sent out at about 10:15 a.m.
All school buildings are on lockdown as a precaution, and all students are safe, the tweet said.
Individuals should not try to enter any of the district's buildings while they are on lockdown, according to the district.
The district also updated its Facebook page regarding the incident:
"PCCSD is currently under lockdown due to a potential threat PCHS. This is a precautionary measure for the safety of our students & staff. Please do not report to the school campuses. All students are safe. Further details forthcoming as soon as they are available."
Check back for updates.