Graffiti containing a threatening message was found at Cal State Long Beach, but was not considered a credible threat, authorities said Wednesday night.
"We found threatening graffiti in one restroom on campus," school President Jane Close Conoley tweeted. "Other institutions have as well. After exhaustive investigation, we deem this NOT CREDIBLE."
Conoley said student safety is the school's top priority "so we will increase our vigilance and continue to investigate."
The university announced it "will enhance police presence as an added precaution."
"If any additional information becomes necessary to share with the campus community, it will be forthcoming," according to a message from the university's Twitter account.
Pictures of the purported message found in a bathroom stall were posted on social media and contained the phrase "School shooter tm Be warned 5-9."
There were no reports of Thursday classes being canceled.
Final exams are scheduled to begin Monday.