Library spokesman Chris Boivin said a white box with unusual writing on it was found on top of the book drop of the Willowbranch Library in Riverside.
Given heightened tensions at the library this week after the cancellation of a controversial LGBTQ event, administrators called police.
Just after noon, a technician in a bomb suit inspected the package and found it contained an audio book reader that was being returned to the library, Boivin said.
The Willowbranch Library has been in the news this week after an LGBTQ prom for teenagers planned to be held there Friday was abruptly canceled.
The suspicious item/police activity at Willowbranch Library has been determined to be nothing of hazard, criminal, or wrongdoing.