The second season of the series ended Tuesday.
The 13-episode third season is scheduled to start airing in September, TVGuide.com reported.
"The success of 'Sons of Anarchy' is very gratifying and the show has become a bona-fide hit," FX President and General Manager John Landgraf told the television industry magazine's Web site.
NBC reportedly holds celebs hostage to Jimmy Fallon's show
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