According to the Pasadena Police Department, a robbery unfolded in Glendora in which several suspects fled the scene and were spotted in an area near PCC's Colorado campus.
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According to a tweet posted by PCC, everyone on campus was asked to lock all doors and shelter in place.
The lockdown was lifted just after 5 p.m.
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It's unclear if the suspects were apprehended but police told Eyewitness News officers may be arrested one person.
No further details were released.
This is a developing story. Details will be added as they become available.