The Ronald Reagan Presidential Library was vandalized ahead of Florida Governor Ron DeSantis' visit on Sunday, police said.
"Ron DeFascist" was spray-painted onto the library's entrance sign overnight.
The Simi Valley Police Department says the graffiti was discovered by library employees before 7:30 a.m. on Sunday.
Library employees cleaned the graffiti off the sign quickly.
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Police do not believe any witnesses saw the vandalism.
"The vandalism took place during the night and there were no witnesses," the Simi Valley Police Department said in a statement.
"There is no indication of threats or any other crimes," the statement added.
DeSantis was scheduled to discuss his book "The Courage to Be Free: Florida's Blueprint for America's Revival" on Sunday afternoon. According to the library's website, the event was sold-out.
The book talk comes as the Florida governor is suspected to launch a campaign for the 2024 presidential race.
DeSantis came in second place behind former President Donald Trump in Saturday's Conservative Political Action Conference (CPAC) straw poll.
DeSantis garnered 20% of support among those polled, while Trump won 62%.
