Walgreens announced on Thursday that they were asking customers to "no longer open weapons" in their stores. Authorized attorneys would be exempt from the request, the second largest pharmacy chain, with 9,560 stores, it said in a statement.
CVS and Wegman's issued similar statements later Thursday.  "The sight of someone with a gun can be alarming, and we don't want anyone to feel that way about Wegmans," the supermarket chain said in a statement . "For this reason, we prefer that customers not openly carry firearms into our stores."
Announcements come two days after Walmart asked its customers not to open firearms in stores – even in states where it is allowed. Walmart also said it would liquidate the sale of ammunition used in high-capacity magazines and military-style weapons. Walmart CEO Doug McMillon said the dealership will stop selling short-barrel rifle ammunition, such as .223 and 5.56 caliber, which can be used in high-capacity magazines and military-style weapons.
Ohio-based supermarket chain Kroger, which has nearly 2,800 stores nationwide, also said this week that it is asking shoppers not to open guns in any of its stores.
The chain of action has followed mass shootings around the country over the past two months that have claimed dozens of lives.
On Saturday, Seth Ator, 36, of the West Texas sister cities of Midland and Odessa, opened fire after a routine traffic stop, killing seven people and injuring more than 20 others. He was killed by police outside a movie theater.
Last month, August 3, 22 people were killed by a shooter at a Walmart in El Paso, Texas. The next day, Aug. 4, a shooter in a popular nightlife district in Dayton, Ohio, shot nine people to death.