Arcata Police Department release: 

The Arcata Police Department responded to Arcata High School this morning upon receiving a report of a possible threat to a school that was circulating on social media. Officers determined the threat to be unspecified and the account that posted the threat had been hacked.

The Arcata Police Department thanks the local community for reporting the posts and being vigilant in regards to our community and student safety.

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Another statement about the debunked threats from Humboldt County Sheriff’s Office:

The Humboldt County Sheriff’s Office is aware of a social media post circulating in our community regarding a threat to schools. Deputies have determined this threat to not be credible. The post does not appear to have originated locally and is reportedly going viral, with law enforcement across the nation also receiving reports of the same message.

We would like to thank the community, parents and our local school districts for quickly alerting us to this post and for your cooperation during this investigation. We take all threats to our community seriously and patrol our local schools regularly to ensure the safety of students and staff. Please continue to report suspicious activity to your local law enforcement.