BERKS COUNTY, Pa. (CBS) — Penn State University has shut down its Berks campus library due to mold concerns.

A university spokeswoman confirmed to CBS3 the library is currently closed due to mold.

“No samples have yet been taken or tested to confirm the official presence of mold, but after what was believed to be mold was detected on the pages of some books in the Special Collections and Archives sections of the library, the facility was closed and a remediation firm was contracted by the campus,” said spokeswoman Lisa Powers. “The firm will conduct tests to determine if mold is in fact present; what may be the cause; and to remediate the issue if necessary. The campus also has hired an environmental testing firm to perform air and surface wipe samples after any remediation is conducted.

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A student told CBS3 the library there was suddenly closed for what signs show was emergency maintenance.

There is no word yet on how extensive the mold problem is. Crews are cleaning up the mold.

This news comes as two Delaware Valley schools are dealing with mold issues of their own.

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Philadelphia’s John B. Kelly Elementary School and Monroe Township’s Holly Glen Elementary School are both currently closed due to mold issues.