Chatham-Kent police say the courthouse is open to the public again.
It was closed earlier today after someone made a threat against the building on Grand Ave. in Chatham.
No injuries were reported and there were no reports of any arrests in connection with the incident.
Police are asking anyone with information to contact Constable Shawn Tremblay at shawnt@chatham-kent.ca or 519-436-6600 extension #86362.