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One of the two men who pleaded guilty to the brutal beating of Giants fan Bryan Stow was taken into custody Friday on a federal weapons charge.

The charges stem from Marvin Norwood’s 2011 arrest in connection with Stow’s beating. During the arrest, authorities found several firearms and live ammunition where Norwood, 33, was living, according to a federal criminal complaint.

He pleaded guilty in county court Thursday to assaulting Stow, bringing an end to a case that has drawn national attention.

The weapons were recovered from an attic crawl space at Norwood’s residence in Rialto, according to the complaint.

During an interview with detectives, Norwood stated that the guns were not his, but that he knew they were there.

“I know there’s a couple of rifles and a couple of handguns,” Norwood told detectives.

Norwood was facing federal charges in the case because he was already a convicted felon at the time of the arrest.

Norwood could be sentenced to 10 years in prison if convicted on the charges.

After his guilty plea Thursday to one count of assault, Norwood was sentenced to four years in prison.

A county prosecutor initially said that Norwood would be immediately released because of time served. However, because of Norwood’s weapon charge, he was turned over to federal authorities.

Louie Sanchez, 31, who was also charged in Stow’s beating, pleaded guilty Thursday as well. Sanchez was sentenced to eight years in prison.

Stow was critically injured when he was attacked in the Dodger Stadium parking lot after the Dodgers and Giants season opening game on March 31, 2011.

Police said Stow was targeted because he was wearing a Giants jersey.