Penn State police are investigating bomb threats emailed to people on the main campus Thursday and the FBI is assisting, the university said.
Police said the threats appear to be part of a national hoax.
People in multiple buildings on the campus reportedly received the emailed message.
The buildings include Rider Building, University Park Airport, Tyson Building, Johnston/Findlay Commons in East Halls, the Agricultural Sciences and Industries Building, Henning Building, Redifer Commons, and the Greenburg Complex.
Police said they will have a presence in the buildings until further notice.
No one has been evacuated and the campus remains open.
Dozens of bomb threats were reportedly made to news outlets, government buildings, banks, libraries, schools and other businesses across the US.
In a statement to ABC News, the FBI said, “We are aware of the recent bomb threats made in cities around the country, and we remain in touch with our law enforcement partners to provide assistance. As always, we encourage the public to remain vigilant and to promptly report suspicious activities which could represent a threat to public safety.”
One FBI official told ABC News that the bureau is likely to get more involved as the number of locations increases and because it is crossing so many state lines.
The official emphasized that as of now, the threats do not appear credible.
Police in Lancaster County were investigating 10 reported threats, mostly to businesses.
State police said troopers were investigating several threatening messages across Pennsylvania.
911 operators in Dauphin and York counties each reported six incidents at businesses and organizations.
A Cumberland County spokesperson said an employee at the courthouse and an employee at the 911 center received similar emails.
One threat was reported in Lebanon.