The U.S. Marshals Officer says 35-year-old William Jacobs was arrested on Tuesday.
He was wanted for aggravated assault against a 14-year-old in Yeadon, Pennsylvania, back in October 2022.
Police took Jacobs into custody on the 1400 block of South 48th Street in Philadelphia's Kingsessing neighborhood.
In a post on X, Marshals offered a special thanks to K-9 Junior who assisted in Jacobs' capture.
Authorities say Junior kept the suspect from fleeing.