Prosecutors have filed federal charges against two brothers who spent nearly two months in jail for an attack on a rival restaurant owner in suburban Detroit.

An indictment unsealed Thursday charges Guiseppe and Girolamo D'Anna with attempting to extort the owner of Nonna's Italian Kitchen in Macomb County's Shelby Township.

In 2011, the brothers pleaded no contest to assault in the baseball bat beating of Piero Ventimiglia. His Italian restaurant was near an Italian restaurant run by the D'Annas. Maria Ventimiglia says the D'Annas didn't want competition. 

It's unclear why the federal government filed its own charges in the case. A judge will decide Friday whether to keep the brothers in jail or set bail. Defense attorneys decline to comment.  

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