Officers say they were flagged down by a library custodian just after 10 a.m. who reported a woman was in a restroom with a possible gun.
Police were able to set up a perimeter and evacuated the building while they tried to make contact with the suspect.
Authorities say they deployed a robot and during that process the woman climbed into the ceiling of the restroom.
Officers decided to wait until she came down and ultimately determined that the gun she was carrying was a replica.
The woman ultimately surrendered to police and was taken into custody.
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According to police, school is not in session right now so the library was not crowded with students.
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This story is developing. Check back for updates.
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