According to police, the department's major enforcement team was following up on a road rage case that happened on March 31.
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Police said the victim reported seeing the suspect brandishing a firearm. Detectives ended up identifying the suspect as a Costa Mesa resident.
Police seized a number of rifles and homemade weapons after executing a search warrant at the suspect's home and business.
Pistol manufacturing equipment along with 3D printers, a drill press, and other materials for printing pistol parts were also found, according to police.
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The suspect has not been identified and the incident remains under investigation.