Threatening graffiti was found at a high school in San Ramon on Thursday morning, police said.
The graffiti was found at Dougherty Valley High School.
Police do not believe the threat is credible, but are increasing police presence.
Just wanted all to know we are actively investigating the threatening graffiti message located at DVHS earlier this morning. While we don’t have any additional evidence to suggest the threat is credible; we take it seriously and will have an increased police presence on campus. pic.twitter.com/28gU071tBe— San Ramon Police (@sanramonpolice) May 24, 2018
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