There is no criminal investigation into any creepy clown threats in the Sacramento County area, says sheriff's department spokesperson Sgt. Tony Turnbull.

"This is a national online phenomenon (for lack of better words), that is now showing locally," Turnbull said. "I’m not going to feed it."

On Tuesday, Fairfield police were made aware of a possible threat to a middle school in the Fairfield-Suisun Unified School District. Police determined there was no credible threat to the campus.

The threat was a tweet from a Twitter user with a few hundred followers, named ClownGangg. It was sent just before 6 p.m. on Monday:

In the Central Valley, Merced police said two high school were also threatened via social media by people dressed as clowns.

Police said the threats were very general in what was going to happen. An investigation into the social media accounts found the online threats were coming from outside of California and were not credible.

The mounting clown hysteria, which began with threats in several east coast-area states, has prompted the mastermind behind one of the most terrifying clowns in literary history to remind people clowns aren't all bad.

READ MORE: Amid hysteria, Stephen King comes to the rescue of clowns: 'Most of em’ are good'