The U.S. Food and Drug Administration (FDA) has sent letters to Walmart, Kroger Co and 10 other chain stores for illegally selling tobacco products to minors, Reuters reported.

In the agency’s letter, the FDA asked that the companies submit a plan of action within 30 days, in which they would describe how they would deal with the problem, according to the report.
The 10 other retail chains that the agency wrote to include Casey's General Store, Family Dollar Stores, 7-Eleven Inc and retail stores run by Chevron Corp.
According to the report, in the letter the FDA wrote, “We all share the important responsibility of keeping harmful and addictive tobacco products out of the hands of kids. Retailers, in particular, are on the frontlines of these efforts to reduce the health consequences of tobacco use and nicotine dependence.”
In February, the agency said it was taking action against the retailer Walgreen Boots Alliance for selling cigars and menthol cigarettes to minors and repeatedly violating tobacco sale laws.
None of the 12 companies were available for comment, Reuters reported.