A defendant from Los Angeles pleaded no contest on Tuesday to possessing bomb-making materials and other charges, and was sentenced to eight years in state prison, the Los Angeles County District Attorney’s Office has announced.

Robert Colt Wilson pleaded no contest to one felony count each of possession of a destructive device on a public street, possession of the ingredients to make a destructive device and possession of a controlled substance with a firearm, said Deputy District Attorney Sean Carney, with the Target Crimes Division. In exchange for his plea, four remaining felony counts were dismissed.

Wilson was arrested May 14 after Los Angeles police officers discovered a loaded weapon and an explosive device in his car during a routine traffic stop. A bomb squad was sent to Wilson’s apartment in the 3800 block of Overland Ave. Bomb-making materials and an explosive device were discovered in the small apartment, officials said.