No tuna DNA in Subway's tuna, lawsuit alleges

Pescatarians may want to avoid eating Subway's tuna, if one is to believe the allegations in a revived lawsuit questioning the ingredients in the restaurant chain's seafood.

Nineteen of 20 tuna samples from Subway outlets throughout Southern California contained animal protein including chicken, pork or cattle, but no discernible tuna DNA, according to the latest complaint filed on Monday in U.S. District Court in California. 

Subway dismissed the claims in the amended suit, the third filed this year, as "meritless" and defended its fish as "high-quality, wild-caught, 100% tuna." The company's lawyers are in the process of reviewing the claim and plan to file a new motion to dismiss what they called a "reckless and improper lawsuit."