A Brooklyn man stands accused of impersonating a police officer, pulling over a van, brandishing a gun, and threatening to kill its driver.

According to a release from Brooklyn DA Ken Thompson, on September 5th at around 7:40 p.m., 20-year-old Maurice Joiner was cut off in traffic by a van making a U-turn near Utica Avenue and Lincoln Place in Crown Heights. Investigators say Joiner then turned on a set of flashing blue and red lights he had installed in his Lincoln Aviator, and pulled behind the van, which then pulled over.

Joiner exited his SUV and walked up to the van "cursing," investigators say, making the driver of the van nervous and causing him to flee; Joiner then pulled up next to the van, brandished a pistol and a badge, and told the van driver through his window that he intended to "blow his head off."

The van driver called 911 and reported Joiner's license plate. The police pulled Joiner over and found an air pistol, handcuffs, a bulletproof vest, mace, and a "gold metal security officer shield."

Joiner is being charged with first-degree criminal impersonation, second-degree criminal impersonation, second-degree menacing, second-degree harassment, possession of an imitation pistol, and possession of mace. He faces four years in prison.