District Attorney Ray Learn tells us state police and his office had bomb sniffing dogs searching the building.
The building was cleared at around 10:40 a.m.
Learn says Smethport Police, detectives from the DA’s office and state police are continuing to investigate.
This is the third bomb threat in a little over two weeks in Pennsylvania county courthouses.
The Mercer County Courthouse received a threat on October 28. The Blair County Courthouse received a similar threat on October 25.