Federal weapons charges were filed against the two suspects in last year's Dodger Stadium parking lot assault of Giants fan Bryan Stow, according to a report in the Los Angeles Times.
Louie Sanchez and Marvin Norwood were charged with being felons in possession of firearms that were retrieved from Norwood's home, according to the report. If convicted, each faces up to a 10-year term in a federal prison.
Both last year were arrested and pleaded not guilty to state charges of mayhem and assault in connection with the beating of Stow, who continues to recover from brain injuries suffered in the attack on Opening Day 2011.
The two appeared in court Tuesday and were ordered to return to court next week.
Stow, a 43-year-old paramedic from Santa Cruz, Calif., wound up in a coma from injuries suffered in the beating and his family has filed a $50 million suit against the Dodgers for damages.
Authorities recovered at least five semiautomatic weapons, according to the indictment.
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.