SAN FRANCISCO (CBS SF) – The Main Library in San Francisco was evacuated and shut down Thursday afternoon after a person jumped from a balcony inside to the main atrium floor below, according to police.

The incident at the 100 Larkin St. library building was reported at 3:43 p.m., according to Officer Grace Gatpandan.

The person was transported to the hospital with life-threatening injuries.

The library, which normally remains open until 8 p.m. on Thursdays, is expected to remain closed tonight while the incident is under investigation, Gatpandan said.

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