Fall Out Boy frontman Patrick Stump was arrested late Tuesday night in Los Angeles after a traffic stop revealed an outstanding warrant for driving without a valid license. The warrant was issued after Stump failed to appear before a Beverly Hills judge in June 2007; the singer was released Wednesday morning on $15,000 bail.

“All I really have to say is ignorance of the law isn’t innocence,” Stump said in a post-arrest interview with MTV News. “I didn’t want to give up my Illinois driver’s license and was unaware that was a crime. It is, by the way, in the state of California. Lesson learned. I technically broke a law, so technically I deserve whatever I get. But man, is my mom gonna be pissed.”