By Lance Duroni

Law360, Wilmington (December 20, 2011, 9:32 PM ET) -- A Morton's Restaurant Group Inc. shareholder launched a class action Monday in Delaware challenging restaurant magnate Tilman Fertitta's $117 million bid for the steakhouse chain, claiming the deal shortchanges investors.

Fertitta, the owner of Houston-based restaurant and hospitality giant Landry's Restaurants Inc., announced Friday that Morton's board had agreed to the $6.90-per-share deal, which boasts a 34 percent premium.

But Morton's shareholder Lon Myers calls the price "grossly unfair and inadequate" in a complaint filed in Delaware court, claiming Morton's board members breached their fiduciary duty...