A federal judge sentenced an MS-13 gang member to life in prison for gunning down a rival gang member on the streets of Springfield.

Federal prosecutors said Sergio Amador, 29, was a member of a New York clique of MS-13 known as Surenos Locos Salvatrucha, an offshoot of the gang Mara Salvatrucha, or MS-13. Two years ago, Amador was sent to Northern Virginia to help a local MS-13 clique fight the 18th Street gang. With roots in Los Angeles, Central America and Mexico, the Hispanic gangs are considered rivals.