The US Attorney's office reports that Elmer Alfaro Hercules, 20, pleaded guilty yesterday to one count of being an alien in possession of firearms and ammunition.
Hercules and alleged MS-13 member Nery Rodriguez Diaz were arrested in the Bremen Street Park, near Marion Street, on May 22.
Diaz has yet to either plead or come to trial.
Hercules, a Salvadoran national, had sentencing set for Jan. 17 by US District Court Judge F. Dennis Saylor, who has been handling MS-13 cases related to a 2016 sweep. Hercules faces up to ten years in federal prison.
In 2015, a federal judge ordered Hercules's deportation - in absentia.