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A man stabbed a fully marked Maricopa County Sheriff’s Posse vehicle on Wednesday in Fountain Hills, authorities said.

Deputies reported Zachary Jacobson, 20, said he attacked the vehicle because he “hates the police” and “wanted to send a message to everyone,” according to a Maricopa County Sheriff’s Office statement.

The statement said Jacobson jumped on the hood of the vehicle while holding a butcher knife with an 8-inch blade.

Posse members ordered Jacobson to drop the knife at gunpoint, at which point he stabbed the hood of the patrol vehicle, piercing the metal, the statement said.

“This is a scary time for all law enforcement,” Sheriff Joe Arpaio said. “We are dealing with a war on cops. People are randomly shooting our law-enforcement officials, then this guy targets a fully marked sheriff’s vehicle to send a message.”