NEW : Online reviewer saw early `` X-Men Origins : Wolverine , '' praises film . Twentieth Century Fox involved in investigation to see how `` Wolverine '' leaked . Latest film in Wolverine series had early version pirated , put on Web . `` `` Wolverine '' , '' starring Web , opens weeks ago .
NEW : Online reviewer saw early `` X-Men Origins : Wolverine , '' praises film . FBI involved in investigation to see how `` Wolverine '' leaked . Latest film in `` X-Men '' series had early version pirated , put on Web . `` Wolverine , '' starring Hugh Jackman , opens May 1 .